Go here for photos, video and commentary from Chris McNamara about Tommy Caldwell's work on free-climbing the El Cap aid route Mescalito. This route will truly be something else as the pitch list indicates with multiple 5.13 and 5.14s . The video (shot by Corey Rich) link is here.
Here's some video from Chris of Tommy reviewing the pitch line-up.
It is also interesting to note a couple of comments on the Super Topo thread warning about adding bolts in order to avoid a "much less committing" aid climb. I wonder how this will play out, an echo perhaps of the history of the Dawn Wall.