At least six new Android 2.3 Gingerbread devices are falling upon AT&T this fall (or late summer), according to an alleged AT&T roadmap detailing the devices’ internal codenames, operating systems, display resolution, RAM, camera resolution, battery capacity, HSDPA category, and release period.

The screenshot of the alleged roadmap was leaked to Pocketnow and shows that two devices each come from Samsung and Pantech, and one each from Motorola and Huawei.

The two upcoming Samsung devices are something we have become familiar with lately. One is the Samsung Singa (SGH-I777), whose handset number suggests that it’s the AT&T variant of the Samsung Galaxy S II we spotted coursing through the Federal Communications Commission (FCC) late last month. We do not know under what name AT&T will rebrand this Galaxy S II variant, but current speculations say it’s going to be named the Samsung Galaxy Attain.

The other Samsung device is the Samsung Gidim (SGH-I927), whose handset number previously caused some of us to think that it was AT&T’s QWERTY-bearing variant of the Samsung Galaxy S II. Reports that followed, however, proved us wrong–this handset is an entirely different one. FCC also certified this device early this month.

Both Samsung phones are due for release this third quarter, according to the leaked roadmap.

Motorola’s contribution to the leaked list is the Motorola Fuath (MB865), said to be an updated succcessor of the Motorola Atrix and rumored to go under the name Motorola Atrix 2.

Two Pantech devices are also slated for release in the fourth quarter. The Pantech Nuli P9060 recently earned FCC approval as a quad-band GSM/WCDMA phone with Bluetooth and Wi-Fi. The Pantech Onza P7050 is also on the list, with a 3-megapixel camera and display resolution of 800×480. Both Pantech phones presumably belong to the mid-range category.

Huawei has been somewhat quiet recently on the Android scene, but it does have an upcoming phone headed to AT&T: the Huawei Jengu (U8652), an entry-level phone with 480×320 display and a 3-megapixel camera.

As summer nears its end, AT&T seems to be curtailing the end of fun with two Samsung gadgets and planning to let the fun go on through the fall with four upcoming Android phones from Motorola, Huawei, and Pantech. Which one of these will be your idea of fun?