AT&T is getting into the Android game lately. With this FCC filing we can guess that this phone is built for AT&T. Engadget spotted a listing in the FCC from Motorola named "Sage," and its packing 7.2 Mbps HSDPA and 2 Mbps HSUPA that works on the same 850 and 1900 MHz bands that AT&T uses for 3G. The Sage also has quadband EDGE, WiFi, Bluetooth, AGPS, and a digital compass, all leading Engadget to believe that the device is indeed a new Motorola Android handset headed to AT&T. AT&T's first android phone, the Flip, in my opinion is a badly designed phone. The HTC Aria, AT&T's other Android phone seems to be a better design and is having more success. Motorola has designed very successful phones for Verizon (Droid, Droid X, and soon Droid 2). My problem with AT&T is the fact that they limit what the device can do. With the Flip, they changed the default search engine to Yahoo and with the Aria, they won't allow side loading of apps.
This article is an assumption based on the FCC filing, but all signs point to it being true. This will help AT&T bring their Android count closer to the other major carriers.