New Gamera Rebirth visual and synopsis have been revealed, the visual gives a better look at Gamera as well as a new adversary, possible Jiger or Legion. The synopsis is overly clear (due to me not knowing Japanese and Google translator not being overly accurate). Check out the visuals here, above with logo, below with out and a lighten up version as well. Below is the synopsis in both Japanese and the translated version. Also below is the stream that will take place at Anime Japan on March 25th 2023.
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最後の夏。友達。そして怪獣——。
1989年夏、小学６年生のボコ、ジョー、ジュンイチは、
小学生最後の夏休みを迎えていた。
それぞれの心にある、将来に対する漠然とした不安。
そんな３人の前に、在日米軍司令官の息子、ブロディが現れた。
3人で貯めた現金をうばっていくブロディ。
怒ったボコたちは、お金を取り返すための作戦を計画する。
その作戦を実行しようとした時、町に危機が訪れる。
怪獣ギャオスが突如、東京に襲来したのだ。
ギャオスによって廃墟となった町に立ちすくむ４人。
ギャオスが彼らに狙いを定めた時、巨大な怪獣が現れる。
その名はガメラ。
これが4人の「怪獣の夏」の始まりだった。
次々と現れる怪獣。傷つきながらも戦うガメラ。
そして少年たちは伝説を目撃する。

(translation via Google)
Last summer. friend. And monsters——.
In the summer of 1989, in the 6th grade of elementary school Boko, Joe and Junichi
Elementary school student's last summer vacation was welcoming
in each heart, Vague anxiety about the future.
In front of such three people, Son of U.S. Forces Japan Commander Brody appeared.
The cash that the three of us saved Brody taking away.
Angry boys, to get the money backplan a strategy.
When I tried to carry out the operation, A crisis comes to the town.
Monster Gyaos suddenly, They attacked Tokyo.
by Gyaos Four people standing in a ruined town.
When Gyaos aimed at them, A giant monster appears.
Its name is Gamera.
this is the four It was the beginning of "Monster Summer".
A monster that appears one after another. Gamera fights even though he is injured.
and the boys Witness the legend.

Kadokawa has announced the Gamera 55th Anniversary Project, to celebrate Gamera's 55th Anniversary, there are multiple things that are planned with probably more to come. Two announcements tie into each other, the release of 4K Blu-rays of the Heisei Gamera trilogy, as well as the showing of 1995's Gamera: Guardian Of The Universe in a limited cinema release.

The Heisei trilogy features each film in a two disc set including the 4K HDR and standard Blu-ray versions, these sets feature a 20 page booklet, the 4K are mastered from the original 35mm negatives while the standard Blu-rays are the same as the ones released in the 2016 box set, they will each feature commentary from many involved in each film, and more. Release date for these sets is Jan 29, 2021, and they will retail for 7,800 yen (depending on retailer).

The limited theater showing of Gamera: Guardian Of The Universe will happen on Nov. 27, 2020, the 55th Anniversary of the release of the first Gamera film in 1965, it will be shown at 7 different cinemas around Japan in 4K (Marunouchi Piccadilly, T Joy Yokohama, Umeda Burg 7, MOVIX Kyoto, Midland Square Cinema, T Joy Hakata, and MOVIX Saitama).

Also there will be a Gamera Tokusatsu DNA event from Nov 27 to Dec 26, at the DUB GALLERY AKIHABARA, that will feature many Gamera releated items as well as continue the 55th Anniversary celebration.

​There will be more as well with collectibles (HG figures) and other items (Showa DVD set), more as we get it.

Links to purchase the three sets on Amazon Japan - 
https://www.amazon.co.jp/exec/obidos/ASIN/B08LRHN1RV/natalieeiga-22
https://www.amazon.co.jp/exec/obidos/ASIN/B08LRFBYLX/natalieeiga-22
https://www.amazon.co.jp/exec/obidos/ASIN/B08LRH7743/natalieeiga-22

Arrow has announced the standard box sets for the Gamera films, there is three set coming, Heisei in regular Blu-ray set and a Steelbook set version, and a regular Showa Blu-ray set, Gamera The Brave is in the Heisei regular Blu-ray set (not in the Steelbook set). There appears to be no difference in the disc content just the set extras are not including from the original release. The Heisei Steelbook set will retail for $46.99, regular set for $64.99, and the Showa set is also $64.99 (not sure why the Steelbook is less), release date is Jan 26th, 2021. 

HEISEI SET
SPECIAL EDITION CONTENTS

• High Definition (1080p) transfers of all four films on Blu-ray, including 4K restorations of the Heisei Trilogy by Kadokawa Pictures
• Original Japanese and dubbed English DTS-HD MA 5.1 and 2.0 audio for all films
• Optional English subtitles for all films
• Reversible sleeves featuring original and newly commissioned artwork by Matt Frank (regular sets only)

DISC ONE – GAMERA THE GUARDIAN OF THE UNIVERSE

• Commentary by Matt Frank
• Newly filmed introduction by August Ragone
• A Testimony of 15 Years: Part 1, the first in an epic three-part documentary interviewing cast and crew of the Heisei Trilogy
• Interviews with director Shusuke Kaneko and SFX director Shinji Higuchi, filmed by Jörg Buttgereit in 2002
• Extended interview with Shinji Higuchi, focusing on the trilogy’s special effects
• Behind the scenes featurettes tracing the film’s production from announcement to release
• Alternate English credits
• Trailer and image galleries

DISC TWO – GAMERA 2: ATTACK OF LEGION

• Commentary by Kyle Yount
• Newly filmed introduction by August Ragone
• A Testimony of 15 Years: Part 2, the next part of the documentary interviewing cast and crew of the Heisei Trilogy
• On-set footage from the shooting of the film’s main unit and special effects filming
• Behind the scenes featurettes tracing the film’s production from announcement to release
• Alternate English credits
• “Lake Texarkana” comedic dub track
• Trailer and image galleries

DISC THREE – GAMERA 3: REVENGE OF IRIS

• Commentary by Steve Ryfle & Ed Godziszewski
• Newly filmed introduction by August Ragone
• A Testimony of 15 Years: Part 3, the final part of the documentary interviewing cast and crew of the Heisei Trilogy
• Behind the scenes featurettes tracing the film’s production from announcement to release
• Deleted Scenes
• The Awakening of Irys (Remix), a montage of behind-the-scenes footage and work-in-progress special effects footage
• Alternate English credits
• Trailer and image galleries

DISC FOUR – GAMERA THE BRAVE

• Commentary by Keith Aiken & Bob Johnson
• How to Make a Gamera Movie, a featurette hosted by director Ryuta Tasaki
• Behind The Scenes of Gamera the Brave, an all-access on-set documentary
• The Men That Made Gamera, a documentary looking back at the series from start to finish, featuring interviews with cast and crew
• Opening Day Premiere, a featurette showing the cast and crew presenting the film at its first showing
• Kaho’s Summer, an interview with the film’s young star
• Special Effects Supercut, a montage of effects shots overseen by FX supervisor Hajime Matsumoto
• Trailer and image galleries
• Note: not in Steelbook set

SHOWA SET
SPECIAL EDITION CONTENTS

• High Definition (1080p) transfers of all eight Showa-era Gamera films on Blu-ray
• Lossless original Japanese and dubbed English mono audio for all films
• Optional English subtitles for all films
• Reversible sleeves featuring original and newly commissioned artwork by Matt Frank

DISC ONE – GAMERA THE GIANT MONSTER

• Commentary and newly filmed introduction by August Ragone
• High Definition (1080p) transfer of Gammera the Invincible, the American theatrical version of the film, with lossless mono audio and optional English subtitles for the deaf and hard-of hearing
• Remembering the Gamera Series, an archive featurette from 1991, including interviews with director Noriaki Yuasa, writer Nisan Takahashi and others
• Interview with Noriaki Yuasa, filmed by Jörg Buttgereit in 2002
• Gamera Special, an hour-long best-of compilation supervised by Noriaki Yuasa in 1991
• Alternate English credits
• Trailer and image galleries

DISC TWO – GAMERA VS. BARUGON / GAMERA VS. GYAOS

• Commentary on Gamera vs. Barugon by August Ragone & Jason Varney
• Commentary on Gamera vs. Gyaos by Stuart Galbraith IV
• Newly filmed introductions to both films by August Ragone
• High Definition (1080p) transfer of War of the Monsters, the shorter American edit of Gamera vs. Barugon, with lossless English audio
• Alternate English credits for both films
• Trailer and image galleries

DISC THREE – GAMERA VS. VIRAS / GAMERA VS. GUIRON

• Choice of three different versions of Gamera vs. Viras via seamless branching
• Commentary on Gamera vs. Viras by Carl Craig and Jim Cirronella
• Commentary on Gamera vs. Guiron by David Kalat
• Newly filmed introductions to both films by August Ragone
• New featurette with actor Carl Craig showing his souvenirs and props from Gamera vs. Viras
• Highlights from the G-FEST X convention in 2003, featuring Noriaki Yuasa and Carl Craig
• The 4th Nippon Jamboree, a promotional film for the Boy Scouts of Japan directed by Yuasa in 1966
• Alternate English credits for both films
• Trailer and image galleries

DISC FOUR – GAMERA VS. JIGER / GAMERA VS. ZIGRA / GAMERA SUPER MONSTER

• Commentary on Gamera vs. Jiger by Edward L. Holland
• Commentary by Gamera vs. Zigra by Sean Rhoads & Brooke McCorkle
• Commentary on Gamera Super Monster by Richard Pusateri
• Newly filmed introductions to all three films by August Ragone
• Alternate English credits for all three films
• Trailer and image galleries

The original hero in a half-shell returns! For the first time ever worldwide, all twelve tales of the adventures of everyone’s favorite titanic terrapin are collected together in one deluxe Blu-ray boxset. This limited edition collectors’ set traces the decades-long evolution of Gamera, from the “friend of all children” in his more light-hearted earlier films, to the Guardian of the Universe in the groundbreaking 1990s reboot series, often hailed as three of the best kaiju films ever made.

​COLLECTOR’S EDITION BOXSET CONTENTS

• Limited collectors’ edition packaging, housed in a large-format rigid box, fully illustrated by Matt Frank
• Casebound, fully-illustrated disc book containing eight Blu-ray discs
• High Definition (1080p) versions of all twelve films, with lossless original Japanese audio and a complete collection of English dub tracks, including classic American International dubs on the Showa-era films remastered from original MGM elements
• Hardback 130-page comic book including a full-colour reprint of the four-issue Gamera comic series originally released by Dark Horse Comics in 1996, and the first-ever English-language printing of the prequel comic The Last Hope by Matt Frank and Joshua Bugosh
• Perfect-bound 80-page book including a new retrospective on the series by Patrick Macias, an archive interview with Noriaki Yuasa by David Milner, kaiju X-ray illustrations by Jolyon Yates, Fangoria set reports on the Heisei trilogy by Norman England, and a viewers’ guide to the English-dubbed versions of the films
• Double-sided four-panel poster of “Gamera’s Map of Japan” in both Japanese and English
• Collectors’ artcards for each film, featuring new artwork by Matt Frank

​
DISC ONE – GAMERA THE GIANT MONSTER

• High Definition (1080p) transfer of Gamera the Giant Monster, with lossless original Japanese and dubbed English mono audio, and optional English subtitles
• Commentary and newly filmed introduction by August Ragone
• High Definition (1080p) transfer of Gammera the Invincible (Blu-ray premiere), the American theatrical version of the film, with lossless mono audio and optional English subtitles for the deaf and hard-of-hearing
• Remembering the Gamera Series, an archive featurette from 1991, including interviews with director Noriaki Yuasa, writer Nisan Takahashi and others
• Interview with Noriaki Yuasa, filmed by Jörg Buttgereit in 2002
• Gamera Special, an hour-long best-of compilation supervised by Noriaki Yuasa in 1991
• Alternate English credits
• Trailer and image galleries

DISC TWO – GAMERA VS. BARUGON / GAMERA VS. GYAOS

• High Definition (1080p) transfers of Gamera vs. Barugon and Gamera vs. Gyaos, with lossless original Japanese and dubbed English mono audio, and optional English subtitles
• Commentary on Gamera vs. Barugon by August Ragone & Jason Varney
• Commentary on Gamera vs. Gyaos by Stuart Galbraith IV
• Newly filmed introductions to both films by August Ragone
• High Definition (1080p) transfer of War of the Monsters, the shorter American edit of Gamera vs. Barugon, with lossless English audio
• Alternate English credits for both films
• Trailer and image galleries

DISC THREE – GAMERA VS. VIRAS / GAMERA VS. GUIRON

• High Definition (1080p) transfers of Gamera vs. Viras and Gamera vs. Guiron, with lossless original Japanese and dubbed English mono audio, and optional English subtitles
• Choice of three different versions of Gamera vs. Viras via seamless branching (72-minute Theatrical Version, 81-minute Director’s Version and 90-minute US Extended Version)
• Commentary on Gamera vs. Viras by Carl Craig and Jim Cironella
• Commentary on Gamera vs. Guiron by David Kalat
• Newly filmed introductions to both films by August Ragone
• New featurette with actor Carl Craig showing his souvenirs and props from Gamera vs. Viras
• Highlights from the G-FEST X convention in 2003, featuring Noriaki Yuasa and Carl Craig
• The 4th Nippon Jamboree, a promotional film for the Boy Scouts of Japan directed by Yuasa in 1966
• Alternate English credits for both films
• Trailer and image galleries

DISC FOUR – GAMERA VS. JIGER / GAMERA VS. ZIGRA / GAMERA SUPER MONSTER

• High Definition (1080p) transfers of Gamera vs. Jiger, Gamera vs. Zigra and Gamera Super Monster, with lossless original Japanese and dubbed English mono audio, and optional English subtitles
• Commentary on Gamera vs. Jiger by Edward L. Holland
• Commentary by Gamera vs. Zigra by Sean Rhoads & Brooke McCorkle
• Commentary on Gamera Super Monster by Richard Pusateri
• Newly filmed introductions to all three films by August Ragone
• Alternate English credits for all three films
• Trailer and image galleries

DISC FIVE – GAMERA THE GUARDIAN OF THE UNIVERSE

• High Definition (1080p) transfer of Gamera the Guardian of the Universe, from a 4K restoration by Kadokawa Pictures
• Original Japanese and dubbed English DTS-HD MA 5.1 and 2.0 audio, with optional English subtitles
• Commentary by Matt Frank
• Newly filmed introduction by August Ragone
• A Testimony of 15 Years: Part 1, the first in an epic three-part documentary interviewing cast and crew of the Heisei Trilogy
• Interviews with director Shusuke Kaneko and SFX director Shinji Higuchi, filmed by Jörg Buttgereit in 2002
• Extended 90-min interview with Shinji Higuchi from 2001, focusing on the trilogy’s special effects
• Behind the scenes featurettes tracing the film’s production from announcement to release
• Alternate English credits
• Trailer and image galleries

DISC SIX – GAMERA 2: ATTACK OF LEGION

• High Definition (1080p) transfer of Gamera 2: Attack of Legion, from a 4K restoration by Kadokawa Pictures
• Original Japanese and dubbed English DTS-HD MA 5.1 and 2.0 audio, with optional English subtitles
• Commentary by Kyle Yount
• Newly filmed introduction by August Ragone
• A Testimony of 15 Years: Part 2, the next part of the documentary interviewing cast and crew of the Heisei Trilogy
• On-set footage from the shooting of the film’s main unit and special effects filming
• Behind the scenes featurettes tracing the film’s production from announcement to release
• Alternate English credits
• “Lake Texarkana” comedic dub track
• Trailer and image galleries

DISC SEVEN – GAMERA 3: REVENGE OF IRIS

• High Definition (1080p) transfer of Gamera 3: Revenge of Iris, from a 4K restoration by Kadokawa Pictures
• Original Japanese and dubbed English DTS-HD MA 5.1 and 2.0 audio, with optional English subtitles
• Commentary by Steve Ryfle & Ed Godziszewski
• Newly filmed introduction by August Ragone
• A Testimony of 15 Years: Part 3, the final part of the documentary interviewing cast and crew of the Heisei Trilogy
• Newly filmed interview with Kaho Tsutsumi about the DNA Tokasatsu exhibition in Tokyo, by kaiju historian Edward L. Holland
• Behind the scenes featurettes tracing the film’s production from announcement to release
• Deleted Scenes
• The Awakening of Irys (Remix), a montage of behind-the-scenes footage and work-in-progress special effects footage
• Alternate English credits
• Spoof commentary by “Gamera” & “Soldier No.6”
• Trailer and image galleries

DISC EIGHT – GAMERA THE BRAVE

• High Definition (1080p) transfer of Gamera the Brave
• Original Japanese and dubbed English DTS-HD MA 5.1 and 2.0 audio, with optional English subtitles
• Commentary by Keith Aiken & Bob Johnson
• How to Make a Gamera Movie, a featurette hosted by director Ryuta Tasaki
• Behind The Scenes of Gamera the Brave, an all-access on-set documentary
• The Men That Made Gamera, a documentary looking back at the series from start to finish, featuring interviews with cast and crew
• Opening Day Premiere, a featurette showing the cast and crew presenting the film at its first showing
• Kaho’s Summer, an interview with the film’s young star
• Special Effects Supercut, a montage of effects shots overseen by FX supervisor Hajime Matsumoto
• Trailer and image galleries

Specifications

• Running Time: 1174 Mins
• Number of Discs: 8
• Language: Japanese
• Subtitles: English
• Audio: 1.0 / 2.0 / 5.1
• Aspect Ratio: 1.85:1 / 2.35:1
• Color: B&W / Color
• Release date: August 18, 2020 (Note: Amazon still reflects original date.)

​Gamera: The Complete Collection Blu-ray Set has hit Amazon's website and it looks to be a rival to the Godzilla set we recently got. It will be a collector's box with Matt Frank art, commentary, 80 page booklet, comic book, and more check out the details below.

Gamera: The Complete Collection Blu-ray
The original hero in a half-shell returns! For the first time ever worldwide, all twelve tales of the adventures of everyones favourite titanic terrapin are collected together in one deluxe Blu-ray boxset. This limited edition collectors set traces the decades-long evolution of Gamera, from the friend of all children in his more light-hearted earlier films, to the Guardian of the Universe in the groundbreaking 1990s reboot series, often hailed as three of the best kaiju films ever made.

Limited collectors edition packaging, housed in a large-format rigid box, fully illustrated by Matt Frank

All twelve uncut original Japanese versions of the films in high definition, with lossless Japanese and English audio 4K restorations of the critically acclaimed Heisei trilogy (Gamera the Guardian of the Universe, Gamera 2: Attack of Legion, Gamera 3: Revenge of Iris)

Hours of new and archive bonus features, expert commentaries (including August Ragone, David Kalat, and Steve Ryfle & Ed Godziszewski), interviews with cast and crew, and the worldwide Blu-ray premiere of Gammera The Invincible (the American theatrical version of the first film)

Hardback 120-page comic book including a full-color reprint of the four-issue Gamera comic series originally released by Dark Horse Comics in 1996, and the first-ever English-language printing of the prequel comic The Last Hope by Matt Frank and Joshua Bugosh

Perfect-bound 80-page book including a new retrospective on the series by Patrick Macias, kaiju X-ray illustrations by Jolyon Yates, and much more!
FINAL SPECS TO BE CONFIRMED SOON

Product details

• Actors: Eiji Funakoshi, Kojiro Hongo, Nobuhiro Kashima, Tsutomu Takakuwa, Eiko Yanami
• Directors: Noriaki Yuasa, Shigeo Tanaka, Shusuke Kaneko, Ryuta Tasaki
• Format: Anamorphic, NTSC, Widescreen
• Number of discs: 8
• Studio: Arrow Video
• DVD Release Date: July 28, 2020
• Run Time: 1174 minutes
• Retail price $179.95
• Amazon pre-order here