The new Jojolion chapter is translated!
Looks like Josuke's true name is Josefumi Kujo, and apparently he was hanging around a guy who looks suspiciously similar to Part 4 Josuke. As usual, every answer we get raises a dozen new questions.
I actually thought the guy that looked like Josuke was Josefumi, and the guy in the sailor suit was Kira. Karera even mentions that he looks really different and assumes he's hiding from someone.
But yeah, basically Josefumi looks like Josuke, and his name matches with Jotaro (Kujo) and Joseph (Josefumi). And Kira is of course Kira, and arguably Jotaro since he's Holly's son… So Gappy is, to varying degrees, an alternate version of four different characters. My brain hurts.
I really like the new stand we saw at the end of the chapter. I'm assuming these new villains are rock humans and the reason they're after Karera somehow relates to the fruit or whatever it is that Josefumi/Kira knows.