We posted this in the past now they are showing up as pre-orders on a number of sites, all Godzilla 60th anniversary Blu-ray & DVD releases (all of the 29 titles including the '98 American Godzilla film) will be available.
16 titles are newly released as Blu-ray format, and other 13 ones are reissued. They are listed close to $50 US but should be had for less, these show in listings on CD Japan as being region free, if so then for possible the first time US buyers can get the highly sort after Godzilla 1984 in these formats.
Most include bonus material, trailers, making of, poster art, etc.
You can go to the CD Japan site here.