ight let me get back on my BS for a quick sec and put on my conspiracy hat
A variant cover for Dark Crisis 5 features several of the legacy heroes charging into battle. Something of note is that Yara Flor is front and center yet Jon is nowhere to be found. Even Damian is on the cover but not one of the supposed main characters for this event. Not every character needs to appear on every cover, but Jon is conspicuous by his absence on the cover given who else is on there. Another variant features a coffin and the solicits mention a character dying.
I'll lead with my conclusion: aged up Jon will be killed and the real Jon will be invariably brought back.
(pulled from the PKJ thread)
With this supposed "brand new era" coming next year, Jon's absence (or exclusion) is even more conspicuous. Jon's role is barely even alluded to in the article and he doesn't appear in any of the 26 variant covers except one and it's the real Jon. You'd think with the doubling down of the untenable position of having two Supermen at the same time, there would be at least a few hints as to what to expect next with him or as many covers featuring him as there are featuring Lois and Lex but there aren't.
Almost like Jon is no longer Superman (not because he's dead but because he's no longer a man).
However DC chooses to de-age Jon, it's not unprecedented for a Superboy to die in a Crisis. It's extremely unlikely that this supposed death is any other member of the JL because each member is too big of a character to be killed for cheap shock value a this stage but aged up Jon is the one character that no one will miss (and don't come at me with any of that "but Dc WILl be SEEn as HoMophobIC" BS. Stop acting like he isn't bi even when he's a kid).
Or I'm just reaching like I regularly do, but I don't think I'm the only one who connects these dots.