At this point I’d be more surprised if it wasn’t a cross gen release, with how long it’s been in the works (even since it was restarted) I just can’t see it not coming out on the current Switch as well as the switch 2, it could be the game to show of how much more capable the Switch 2 is as well, I’d say Legends Z-A could do the same, but with the last few Pokemon games have varied in performance, you never know how GameFreak will adapt, I do think that will be a cross gen game as well as it’s not very often you get a Pokémon announcement without any gameplay at all.
I don’t think it’ll be a system seller either way though, could easily be the best selling Metroid though, if they market it right, showing the difference between the two versions graphics, letting people know it’s backwards compatible, they can start the game on their current Switch and carry on when they get a Switch 2. So it probably will get a single trailer in a direct blowout for the Switch 2 in January 2025