Yeah, I like audino's, but I'm not that into slowbro, but there are always 2 different mega evolutions of each Pokémon.
Safe to say this would be slowbro Y, LOL. WHY, OH WHY.
EDIT:
Audino is clearly the X mega evolution.
I wonder if there's a 3rd mega evolution that will be revealed in Pokémon Z in Q4 2K15.