Last year I attended the Dreamforce session: Next Generation Debugging with the Developer Console and Tooling API
One of the most exciting things that was mentioned was that the Force.com IDE is being rewritten to take advantage of the Tooling API.
Does anyone have any details about when this is happening? I assumed it would have been Spring '13 which was when the Tooling API went GA, but having now read the summer '13 release notes and still seen no mention, I am now wondering when this will happen.