ETA: am I the only one wondering why the trailer dropped so many cameo glimpses, especially one as fandom shaking as Ventress?
Either marketing is blowing almost a whole season's worth of surprises for the sake of building hype (and driving D+ resubs), or all of this happens early in the season and there's something way more surprising still under wraps.
The first option is far from impossible, but to date LF/Disney marketing have been pretty good about not spoiling anything crazy in the teasers or main trailers. It's only when the TV spots star popping up that they start drip-feeding more new footage that is necessarily ideal (and this why I long since tried to avoid them.) The aftermath of the strikes and the decline in streaming subs may have overridden that policy of course, but we'll see.
So if not that, then what the hell else could be going on? Could the reason they're spoiling Ventress now be that she shows up in the three episode premier, and will recur throughout the season? Would certainly be weird to do something as major as this for a one-and-done AND spoil it in the trailer.
I guess the most likely possible "surprise" kept out of the trailer could be Boba (because: "Alpha") and especially so with Bane back in the mix again.
I was going to make a comment about them not working the schedule to withhold the finale a few days for May 4. But I guess it makes sense they might have something else bigger planned for that day.
Yeah, they tend to like to use it to kick something off rather that wrap it up, since that's when it's most important to have as many eyes as possible on it.
Timing the finale to within a few days seems like they're trying to use fan engagement efficiently by letting the finale ride the wave of Mt4 anticipation, without being too close that it and whatever may drop next don't step one each other.
As for what it could be, (aside from the usual merch announcements/promotions) the more likely candidates are a trailer of some sort for 'The Acolyte', literally anything more about 'Skeleton Crew', and/or some more material on 'Outlaws', or a trailer for 'TotJ season 2'. There may be some more clarification on the various movies in the pipeline or clarification on the status of Mando season 4 (though I rather expect that much sooner than May), but I wouldn't expect anything more substantial that some marketing copy and maybe some stills for any of those.
Andor season 2 seems too far off at this point, so I'd be surprised if they do anything except maybe a token bit of marketing, like a look back for season 1 isn't impossible. It feel like it's been a while since anything solid has been said of the 'Lando' project so while I'm not holding my breath.
Finally there's the unknown wildcard of an as of yet unannounced new project, like say the an animated show to replace 'Bad Batch'; something set in the 'High Republic' as a more grown up stablemate of YJA seems the more likely option, but a post ROtJ OT cast show isn't out of the question and would be a handy way to side-step the question of recasting since finding voice actors to fill the role is an easier challenge than live action (plus they've already done it more that once.)
I'm going to go out on a limb however and propose that they just might simply drop the 'Ahsoka' BtS doc (assuming they're producing one) day of without warning.
A glowing pool.. .. something something lazuraus pit something ..
Well they did establish
that same exact magik pool in the show . . . and
the water of life, and then there's
this whole thing, and
this . . . and that doesn't even include that business with the zombies. Suffice to say, it should be surprising NOT to see a body that was buried on Dathomir come back to life sooner or later.