Samsung Infuse 4G
First up is the Samsung Infuse 4G running on AT&T's HSPA+ "4G" network (not compatible with their LTE 4G network going active 2012-2013-ish) with a 4.5" Super AMOLED Plus display. It's said to be super thin (thinnest on AT&T) and running on a 1.2 Ghz (single core Hummingbird) processor, 8MP rear camera, 1.3 MP front facing camera.
HTC Inspire 4G
This appears to basically be an AT&T flavored Thunderbolt/ Desire HD/ Evo 4G which will be a very welcome offering on AT&T! Standard Android 2.2, 8MP shooter with 1.2 (I believe) front facing camera, and 4.3 inch display.