Ultimate, as announced in a Nintendo Direct presentation. Ultimate. And by the end of the trailer it looks like Luigi's soul is going back into his body...until a giant white face appears in the window. Ultimate roster! Previously-selected fighters will no longer be available, forcing you to move beyond your favorites as the competition continues. Simon Belmont and Richter Belmont are joining the character roster as fighters, meanwhile Dracula will show up as a stage boss every so often. The retro hero will come partnered with his iconic whip, although his look has been slightly altered, and his echo fighter will be Richter Belmont from the same series. In Smashdown, characters will become locked after they've been used once, so you'll need to be well-versed in a number of fighters if you want to win. There's also a new Stage Morph option where you chose two stages so your match alternates between them during the fight. There's a new sound test option where all the songs are grouped by series. And since Nintendo Switch can be played anywhere, these tournaments can even take place in unexpected places! Nintendo and series creator Masahiro Sakurai managed to pack a lot into its relatively short running time, covering everything from new stages and characters to new assist trophies and game modes. Ultimate, but it wouldn't be hard to also sneak in a new Switch exclusive Castlevania annoucement as well. For assists, we have Zero from the Mega Man X series, Knuckles from Sonic The Hedgehog, Krystal from Star Fox Adventures, Rathalos from the Monster Hunter series, Shovel Knight, and the evil Moon from The Legend of Zelda: Majora's Mask.
As far as new modes, Super Smash Bros.
Squad Strike - 3v3 or 5v5 battles, with new characters tagging in when a previous one is defeated. "He'll assist the player with his Crissaegrim sword, and vampire powers".
You can choose to turn on a chargeable Smash Ball meter that will unleash weaker final smashes upon filling. Ultimate Nintendo Direct, during which five new characters were announced for the upcoming crossover fighter. If it's significant enough to merit its own spot on the main menu screen, just below "Smash", it must be a big deal.