I'm gonna take a guess at how it'll go down today. Maybe more wishful thinking than an educated guess though XD
Start of Direct
NEW GAME: Kirby: Galactic Champions (new Kirby sidescroller with an emphasis on boss fights, introduces some new powers and brings back a lot of the boss/villain characters from the series)
FEATURE: Metroid Prime 4 (about five minutes of gameplay coverage/story teaser)
10 minutes or so of headlines, most notably we get news on a Fire Emblem 4 remake, a preview of the new Professor Layton, and the upcoming Balatro gameplay update with a preview of some of the new jokers/mechanics
Nintendo Switch Online update, mostly focused on Nintendo 64 with the original Super Smash Bros. as the headliner along with one or two third party games
FEATURE: Dragon Quest I-II 2D/HD, release date revealed
FEATURE: Chrono Trigger 30th Anniversary Edition port to Switch (also coming to PS5/Xbox, basically just the Steam/PC version with some quality of life features ala the Final Fantasy Pixel Remasters, EXP/Gil/Tech Point sliders, a quick travel feature for the Lost Sanctum, no graphical improvements or major gameplay changes though, release date later today) After the Chrono Trigger port reveal we get a quick reveal from Yuji Horii that work has begun on a full 2D-HD remake of Chrono Trigger, coming sometime next year, though nothing from that is shown.
Next is a quick sizzle reel of some smaller third party and indie projects.
FEATURE: Halo: Master Chief Collection reveal for Switch
Finally, we get someone from Nintendo thanking Switch players for all their support over the years, that this will be the last Switch exclusive Nintendo Direct, and to tune in next Wednesday for the full reveal of the Switch 2. Then we get the "we have one more announcement to make, this will be the last announcement for today".
NEW GAME: Super Metroid: Return To Zebes, a full remake of Super Metroid produced by Mercury Steam in the Metroid Dread style.
This signature won't change until Chrono Trigger gets a re-release on a modern Nintendo console.