AT&T's teaser site for the Dell Aero has gone live and we can now fill in a few more gaps in our knowledge about this forthcoming handset. It's looking every bit the renamed Mini 3 we thought it was, so click here and here to get a closer look at the body of the device. The official web mouthpiece confirms a 3.5-inch screen with nHD resolution -- which may or may not signify the same 640 x 360 as on the Brazilian and Chinese versions -- and one definite point of departure, a 5 (rather than 3) megapixel camera on the back. Claimed to be the lightest Android smartphone yet, the Aero will also come with WiFi and GPS built in, though its biggest attraction will undoubtedly be the thoroughly tricked out Android UI, which promises Picasa, Flickr, Facebook, YouTube, and Twitpic integration right out of the box. Check out the gallery below for some hints of what that will look like.