Will Swetnam of ThePaceline.com reports that Lance Armstrong and George Hincapie were using some brand new Trek gear in the prologue of the Dauphine Libere on Sunday. Lance reportedly rode a new time trial bike called the TTX, while both he and Hincapie had new handle bars on their bikes.
As far as I can tell, these components are being tried out for the first time, so there was no guarantee that the riders of the Discovery Channel Pro Cycling Team would like the changes enough to use them in the Tour de France. However, George Hincapie won the prologue and Lance Armstrong finished fifth, so that can't hurt.
The Paceline article includes some good photos of the new equipment. You can try to compare it to the photos of the Discovery Channel TT bikes that I took at the Tour de Georgia:
You may want to click through those Operation Gadget photos to see the high resolution images.