I played it yesterday and I really like it. The flying is a bit awkward in the beginning, but after a while I really had a great sense of flying. You almost feel the gravity pullling. The graphics are nice and colourful. The voice acting is pretty good and the "flying around" is fun.
My only complaint is the camera point which feels almost fixed and is quite stubborn. Also the moves are a bit tricky to master sometimes, e.g. the grabbing of enemies with A+B takes a bit of practice and a lot of the time you're not seeing what your grabbing at.
Overall a nice game. I've just played the first few levels so I don't have the full ins and outs but for the time being I would give this a thumbs up.