For my purposes, my XTi is good enough optically to satisfy me, so I've been holding off upgrading my camera waiting for something with built-in GPS.
I can't believe Canon released a full-frame camera with integrated GPS almost a year ago, and they still haven't brought that feature into their crop-body line. I would have expected the crop bodies to get that feature first, since they are more consumer-oriented products. Canon's consumer point-and-shoot cameras have had GPS since early 2011. It's time. Actually, it was time several years ago. Now it's just painful.