I just noticed something about this game. Take a look at this.
See that? The logo has one artifact from each part on it. Clockwise from top right: The Stone Mask from Phantom Blood, The Red Stone from Battle Tendency, The Card from Jotaro's hat from Stardust Crusaders, The Peace symbol from Josuke's outfit from Diamond is Unbreakable, Golden Experience's Ladybug decals from Vento Aureo, a Butterfly representing Stone Ocean, and a Horseshoe representing Steel Ball Run. But look, there's another one, an anchor. Now, what could THAT represent? hm? Any Ideas?
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I think they're gonna surprise us with Part VIII being in the game.