WALL-E is definitely gonna win. Pixar seems to be the most advanced, most clever, and most innovative animation studio in this present day. KFP was a very good film, but WALL-E will almost certainly win. KFP was funnier than WALL-E, but WALL-E has absolutely beautiful CGI animation. Nothing can stop WALL-E from winning.
Bolt was pretty good; the story, music, and animation was enjoyable (save Miley Cyrus' voice acting).
Again, WALL-E will win it (although in some ways KFP pulls an extremely close second).