Tamashii looks to be releasing yet another repaint set, the S.H. MonsterArts Spacegodzilla & Little Godzilla. The images come from Twitter (@_Erasu) but look to be legit. There are no details at this point (price, release date) but from the pics Spacegodzilla features slightly different coloring, darker, and a effect for his shoulder crystals, Little Godzilla has a darker color scheme as well.
Update: Official info and pics have been released this set will be able to be pre-ordered starting Sept 15 from the Bandai Premium Shop with release in Feb 2018, it will retail for 14,904 yen (approx $135 US), no word on a US release yet. Both figures are the same size as the previous releases 16.5cm for Spacegodzilla and 9.5cm for Little Godzilla, the new figures have a "dirty" look/coloring from the battle scene, and Spacegodzilla has gravity effect parts.