An official launch date was not announced other than "November" -- but previous leaks point to a Nov. 2 landing.
The Lumia 920 features a glove-friendly 4.5" WXGA (768x1280) curved glass capacitive multi-touch display, a 1.5GHz dual-core Qualcomm Snapdragon S4 processor, 32GB of storage, 2000 mAh battery, integrated NFC, and built-in wireless charging using the Qi wireless standard.
A teaser video hinted that a Cyan Lumia 920 was incoming, and indeed the AT&T press release says the phone will be available in "red, white, black, yellow, and cyan".
AT&T announced that the second-rung Lumia 820 would also be coming to its network. But if you're in the mood for the Lumia 820, hopefully your favorite color is black, because that is the only color that handset will be carried in, for now.