[Tokumonkey]

If this is, indeed, the main suit, then I'm very curious about the seemingly-false image from page 21 of this thread. At the time, it seemed likely it was one of the annual attempts for someone to clickbait by faking a next-Rider image. Now that we've seen what's apparently the actual suit, four major possibilities occur to me:

1. It's a different form of Gotchard. (Possible, not likely.)
2. It's a different Gotchard Rider, and Gotchard will follow the Reiwa trend of many-Rider series. (Also possible, but I think unlikely.)
3. It's a Kabuto-style "cast off" outer form for Gotchard. (Unlikely because not enough details correspond.)
4. Someone who'd seen the actual suit used its description to prompt Dall-E or Midjourney, and that was the output. (I think this is the most likely.)

There are too many specific, accurate elements for it to have been a total fake: the arrow-eyes, the "Heisei-style Rider helmet on top," the overall color scheme. It's machine-produced, so it's got the uncanny valley element, but it's not a fake in the traditional sense. More like a poor drawing, maybe.

The suit doesn't instantly suggest how the retail toy line will work. (It seems that much of a Rider's design is based on the retail gimmick, such as Revolve On for Geats and Fourze's swappable modules.) Maybe the front panel swings open? Maybe the helmet swings open? Looking more closely, I think it may simply be Zero-One-style swappable armor, and the individual pieces connect to the angular shapes on the limbs.

I can't say I love the suit, though. Maybe it's the angle or the inexplicable white triangle, but it just seems like the bad kind of "busy." YM, of course, MV.