This morning AT&T took the wraps off their expanded phone lineup that will feature the next release of Windows Phone, code-named Mango. They also announced they will be among the first carriers to start updating existing AT&T Windows Phones with the Mango release this fall.

AT&T said they will carry three brand new Windows Phones this year including the HTC TITAN, the Samsung Focus S and the Samsung Focus Flash.

The HTC TITAN was unveiled. to the world last week as a global phone. It features a 4.7-inch display, a front and rear facing cameras for video chats.

The Samsung Focus S comes with with a 4.3-inch Super AMOLED Plus display, a 1.4 GHz processor, 4G speeds and a super thin profile. It also includes front and rear facing cameras.

The third phone in the lineup is the Samsung Focus Flash. The Focus Flash is a great pocket phone with a 3.7-inch Super AMOLED screen, but still packs a 1.4 GHz processor.

AT&T will be also among the first to offer the Windows Phone Mango update to its portfolio of Windows Phones this fall. Current Windows Phones from AT&T include the HTC HD7S, HTC Surround, LG Quantum and Samsung Focus.