This is the first Direct in over a year, apparently.
They listed everything on a page here so that's helpful. I'll list the stuff you probably care most about.
- Return of Mario golfing in Mario Golf: Super Rush.
- Skyward Sword remaster and DLC of Hyrule Warriors:Age of Calamity
- Remaster of Legend of Mana.
- Physical copy of Hades with a DL code for the soundtrack.
- It looks like a spin off of The World Ends With You in World's End Club
- Two new Smash Character reveals from Xenoblade Chronicles 2.
- The Mario stuff in New Horizons for the 35th anniversary.
- And most importantly....Splatoon 3 announced for 2022.
Again, there's more at the source.