I don't know if a patch is planned, but I played it on my Switch 2 and there's a massive difference in performance. Particularly the stages where you drive the divine beasts. On Switch they drop down to like 15 fps or something, on Switch 2 it's super smooth and feels like a completely different game. Here's a video.
It'd be nice to get a patch for extra FPS and more enemies on screen for the Switch 2 though!
I finished the main story in Donkey Kong Bananza. That was wild and fun! Of course there's still tons of stuff to do and bananas to acquire. I think there might be something more post main story, I'll keep playing and see what happens, don't want to spoil anything. I played a few times but for a lot of hours in a row, so I'm taking a break before I come back to DK Bananza.
I had an online session playing the Teenage Mutant Ninja Turtles: The Cowabunga Collection with my cousin. We finished TMNT the Arcade game and Turtles in Time (SNES) once in Normal Mode and once in Hard Mode. We also played but gave up when we game over'ed The Manhattan Project and ended on Hyperstone Heist but it was way too late and we had to end it there. Such fun timeless games!
I alse played a little bit of Mega Man 11, I'm thinking of going through the different Mega Man games chronologically on the Switch collections soon...