nothing disconfirming PacMan OR Mii's which mind you could EASILLY have been assists or stage stuff or items or ANYTHING and havent been yet.
I won't pretend there is no chance Miis will still be playable, but after this Direct there seems to be decent reasons to doubt that they are. The biggest reason, of course, is that the Find Mii stage uses a crown as its series logo instead of the Mii logo. It is very unlikely that Miis would use this as their series logo, and since this stage is clearly from a Mii-centric game, that raises a serious red flag. On top of that, a Mii was shown to reside in the cage in that stage, which means that they are in fact "stage stuff," at least to a small degree. On top of that, Miis were shown to once again be used in the online mode as avatars; while this does not mean they are not playable necessarily, it does give the impression that there's a good chance they are not. Not to mention the fact that the jet pack from Pilotwings Resort was shown, which seemed like the obvious choice for a Mii Up-Special. This is in addition to the bowling ball move of the Villager, boxing moves seen on two characters, yoga of the Wii Fit Trainer, baseball bat of Ness, and tennis racquet and golf club of Peach. Altogether, this leaves the Mii with relatively few obvious options for a unique moveset. Admittedly this is a pretty weak and highly arguable reason as to why they might not be playable, but the point still stands for what it is worth. Now, with all of that said, there is still a decent chance Miis are playable, especially since there is another Mii-centric game stage (whose series logo we haven't seen for that matter), two more if you see Pilotwings as a Mii game, and the Sal Romano leak to support their inclusion. For the record Miis are my most wanted character after Pac-Man, so I'm really hoping my paranoia turns out to be misguided! For now let's all try not to lose our minds too much over these new Direct-fueled mysteries, I imagine all will become clear soon enough.