Because of shawheim's post on the Photon that he got, I'm really excited now. From the side-by-side comparisons, it looks like the Photon is not quite the 5 inches tall, since that's what the EVO 3D was listed at (and the Photon looks shorter from the pics he took). Overall, the form factor looks similar in dimensions to the EVO 4G, except maybe slightly taller (but not by much).
Once he takes more pics, we're likely to see more of the thickness comparisons with the EVO 4G, but overall...it's definitely the perfect upgrade phone for me!
Love the G-Note series!