Bayern will win their group or at least end up on 2nd place (and I say this as a Bayern hater). I'm not sure though if Bordeaux or Juve will accompany them.
I'm very curious as to how the current German champion VfL Wolfsburg will perform in their first CL season.
Anyway: Like every year we will see a few surprises in the group stage, but from quarter finals onwards there will only be the richest teams. The CL already proofed that money can buy international success (with a few exceptions, i.e. Chelsea).