There is a catch, however: it looks like it's only available for the Desire HD and Desire Z phones, which should be going on sale any day now. I signed up for it and attempted to use it with my plain ol' Desire, but didn't have much luck.
I've personally been waiting so long for the Desire Z, I felt like my mind would explode once I held it. Luckily I'm still alive to tell the tale of how beautiful the phone is to hold. UPDATE: video live!
Milled from a single piece of aluminum much like their Legend phone (only, with some plastic this time 'round), the Desire Z is as far removed from HTC's previous slide-out Android, the G1, as you could possibly hope.