>>32709569The featurelist the press site has is:
Play Pokkén anytime, anywhere on Nintendo Switch – Play Pokkén Tournament DX in TV mode, handheld mode, or share a Joy-Con controller with another Trainer to battle one-on-one in tabletop mode anywhere!
A brand-new fighter — Decidueye enters the battle, alongside all previous Pokémon from the Wii U and arcade versions.
New Support Pokémon – Litten and Popplio make their debut to lend their support in battle.
Team Battle mode – Pick three Pokémon and battle it out to be the first to defeat all your opponent’s Pokémon to win in the new Team Battle mode.
Group Match mode – Find similar skilled players in battle rooms for intense and fun battles online.
Daily Challenges – Complete a variety of different daily challenges.
Watch battle replays – Hone your skills by watching other players’ replays and share your best matches online with the new replay feature.
Jump straight into battle - All characters and Support Pokémon will be available right from the start of the game.
The tabletop mode seems to support it both via splitscreen and a single screen mode, but how exactly that works we don't know yet. There's also at least 1 new stage
