Tears of the Kingdom producer confirms that there is currently no DLC planned and they will likely be moving on to a new game
Tears of the Kingdom producer confirms that there is currently no DLC planned and they will likely be moving on to a new game

Nintendo Moves on to Brand New The Legend of Zelda Game, Rules Out Tears of the Kingdom DLC - IGN

I'm kind of bummed about this, the game already has a ton of content but BoTW had some great challenging DLC and ToTK would have definitely benefitted from something similar.
Makes sense to me. It's sounds like the Switch 2 successor console is in the works. I'd imagine it to be mostly backwards compatible, but shifting resources towards a game that is effectively exclusive for the new console would make a lot of sense for a flagship 1st-party studio.
There's no good reason for Nintendo to switch off ARM, it's gonna be backwards compatible like the Wii, GameCube and WiiU all are. Nintendo making a sequel console that isn't a Switch 2 makes no sense.