Will they be wearing AGT uniforms. And maybe a debut of the Enterprise F
I'd love to see the future commbadges seen in TNG, DS9 and VOY revived as the official commbadge in use in Starfleet around 2399. The uniform itself would be nice and a wonderful nod to in-universe continuity but if they did go with a different design I wouldn't be surprised, in part because the future sequences from "All Good Things...(TNG)," "The Visitor(DS9)" and "Endgame(VOY)" are now from future timelines that no longer exist or were fantasy creations to begin with.
Admiral Janeway's interference with history to get Voyager back home 16 years sooner eradicated the history she experienced, a timeline that included the TNG and DS9 uniforms from the late 24th and early 25th centuries. If they're different that could be why.