Been rumours that Nintendo Switch 2 will release in the second half of next year (I would expect September-November time). They may target September 2024 so they can get consoles out there and have a re-stock in November/early December, giving two lots of availability for the Christmas period. This was something in their plans after seeing the shortages of PS5 and Xbox Series at launch and it has taken them pretty much until this year to fully recover. Production is likely starting soon and development kits are in hand with third party developers.
Some of the early reports are saying this first iteration will go back to an LCD screen, which while a bit disappointing makes sense. They just want to keep cost down in early production so they can focus on higher quality parts in other areas (better SoC, more storage etc). Then they'll likely follow the same path as this version and release and OLED model later. Hybrid is still a thing which again was probably an easy decision, but backwards compatibility is still not confirmed. Nintendo wants to do it, but third parties are pressuring them to not have it. This is basically so that instead of being able to play a current Switch game, you'd have to buy some kind of ultimate version on Switch 2 so they can charge you again. Hope Nintendo sticks to their guns.
Seen a lot of people discuss games like Metroid Prime 2 & 3, Zelda Wind Waker and Twilight Princess etc. I think these kinds of games have potentially been ready for a while, but Nintendo has decided to hold them until next year. They will make for good gap filler games to sell in the lead up to the new console. I think Metroid Prime 4 is probably going to be a dual release and there might be another game, from one of Nintendo's bigger franchises that releases like this as well. I've always thought we could see the next Mario Kart release for Switch & Switch 2 near Christmas 2024 as that just seems like an instant winner.