Unused Announcer Clips found. Mainly just for modes not present in the 3DS version, although "8-player Smash" raises an eyebrow...
Maybe some hope for stuff left out of the 3DS version but in the Wii U version?
Of particular interest there's:
-Boss Battle-should also point out Brawl's Boss Battle 1 theme is in the game. Don't know where it's used though
-Tourney/The Champion Is-probably tournament mode returning in Wii U
-Event Match-Events returning to Wii U?
-Grab the Coins-Coin Mode in Wii U?
-Special Smash-Special smashes (AKA metal/flower/lightning/etc) back in Wii U?
-8 player Smash