Switch 2 is likely coming in 2024. What do you think the major launch games will be? Not necessarily on launch day but in the launch period. Switch had BotW and then MK8D the next month.
I think MK9 is the most obvious. I wouldn't be surprised to see a 3D Mario during the launch window either. All the other major franchises seem to have had games release too recently or will be releasing later on Switch to be able to be launch period games for the next-gen.
I guess if we don't end up getting certain games on Switch (DK, Star Fox, Kid Icarus??, FZero...yes i know but a boy can dream) any of those could be launch period titles.
I seriously doubt it, since not all tracks for MK8DX have been released yet, so work on MK9 would be slow, if any right now.
I expect some Mario Jump & run (2D or 3D, though probably the latter), a new IP (Wii had Wii Sports, Wii U had Nintendo Land and Switch had 1-2 Switch, so certainly they'll come with something new to showcase the console again this time) and Metroid Prime 4 getting pushed to the new console, plus the return of a more unexpected IP. And if it comes out in fall, a new Pokemon title, though probably a spinoff, not mainline.
I also foresee a new Yoshi and Paper Mario titles along with a Mario Party and a Mario Sports title before it's second holiday season, with Splatoon 4 a possibility depending on when thee console launches.