The Great Dihedral is an awesome route put up by John Burcham and Danny Giovale. The route is 11 pitches with the first being 5.11+ and the majority of the rest being 5.10. The route has everything from hard slab climbing to steep cracks and plenty of burly offwidths. The route is on the Great Wall near the Vultee Arch. It will be in the new Sedona guidebook that David and Erik are putting out this summer. I don't recommend climbing it for a few more months... it sees NO sun and takes a really long time to dry out.
The Great Dihedral is the best long route I've done in Arizona. Very high quality climbing. The first pitch is hard, just get through it. Wear light gloves and long sleeves on the approach, there's a lot of poison ivy.