I'm pretty sure we'll get a stage tonight and a profile tomorrow. I would be very, very, ridiculously surprised if we go stageless again this week.
Profile could be a lot of things:
MetaKnight would make a good deal of sense, but I'm really hoping they're nice enough to put it in a double update, updating his profile solo would feel like such a cheat with how much we've already seen of him. Maybe paired with his Final Smash or the Halberd.
Could also be a veteran, which would be great since we haven't seen any good ones in a while (Peach doesn't count, since we saw her confirmed a week prior. It lacked suspense).
And of course it could be a complete newcomer to really blow our minds.
... really, a profile will be fantastic no matter what at this point. Sadly, MetaKnight's would be the most boring and uneventful.