To the surprise of no one really, a Pokemon Presents will be happening on February 27, aka "Pokemon Day." It's going to be around 20 minutes and here are my guesses on what will be shown:
-An apology for the launch state of Scarlet and Violet and talks about further patches to fix performance and glitches (the patch notes are going to end up being Cyberpunk 2077 sized aren't they?)
-DLC announced for S/V that will come later in the year
-Shadow drop of gen 1 Pokemon games on Game Boy NSO with gen 2 coming later (and gen 3 for GBA NSO also coming later)
-Pokemon Stadium games on NSO will work with the ROMs in Game Boy NSO so the transfer pack functionality will be intact after all, with Stadium 1 launching that day and Stadium 2 coming out alongside the gen 2 games on NSO later
Those I feel are the most safe guesses on what will be announced.