It's a general Direct that will last roughly 40 minutes and will mainly on Nintendo Switch games launching "this year" (though probably safe to assume some 2024 announcements will likely be made), including new details on Pikmin 4 (launching next month, and which had some minor stuff leak via pre-order cards in Japan like the game will have a 2-player mode and interestingly a confirmation the game is built on Unreal Engine). Here's some of my personal guesses on what we'll see:
-Pikmin 4 is already a given, but my guess is this will further confirm on if the story mode is fully co-op or if 2 player mode is separate from the story
-Splatoon 3: Side Order expansion will likely be given a date, being either late summer or early fall to go along with a new seasonal update
-Supposedly a Mario baseball game might be announced as some people spotted what might have been "accidental early advertisement" at a recent Seattle Mariners game, but it's also likely this was merely general Nintendo ads given Nintendo have about 10% ownership in that team (and used to be majority owners in the past)
-Tears of the Kingdom DLC confirmed for "sometime in 2024"
-Mario Kart 8 Booster Course Pass Wave 5 is given a date and we might learn all the tracks
-Maybe confirming dates for some upcoming waves of Nintendo Switch Online games (we still have no dates for already confirmed games like Excitebike 64, Mario Party 3, and Pokemon Stadium 2)
-This could be where it's confirmed whether or not a Switch version of Persona 3: Reload is happening
Those I feel are the "safe bets," now lets getting into my personal hopes that have equal chances of either happening or not:
-Metroid Prime 2 and 3 remasters confirmed, but whether they'll be graphical revamps like MP1 or simple 1080p upscales of the originals I dunno
-Wind Waker HD and Twilight Princess HD finally break free from the Wii U and come to Switch as a $60 double pack this fall (I bring this up every time a Direct is announced and I keep hoping for once I can take off the clown wig)
-Xenoblade Chronicles X finally gets a Switch port so now the entire series is playable on one system
-Rumor has it a Square-Enix SNES RPG is getting remade, if it ends up being Super Mario RPG or Chrono Trigger I know a lot of 30-somethings who will be extremely happy