Here are the poster, and a still, from Pixar's Lifted. It is a short, directed by sound super genius Gary Rydstrom, and will be playing before Ratatouille. I bet you can guess what it's about all by yourself. You can click on the poster to make it bigger.
Perhaps excitingly, various rumours have been rumbling in the way-way-down of the internet about an upcoming Tim Burton/Pixar collaboration. I'm not so sure this isn't the result of a simple misunderstanding as the newly re-extra-dimensionalised Knick Knack is playing before The Nightmare Before Christmas 3D.