If you purchase the tablet from the Google Play Store, AT&T will give you $100 credit toward an AT&T monthly invoice. To receive the credit, you will have to sign a two-year pact or hook the tablet up via a Mobile Share account. Get details about the offer from a customer service rep either in an AT&T store or on the carrier's website. Information on the $100 credit can also be found once you activate the tablet.
To refresh your memory, the Google Nexus 7 (2013) is manufactured by Asus and comes with a 7 inch LCD screen with resolution of 1920 x 1200 for a pixel density of 323ppi. Driving the slate is a quad-core 1.5GHz Qualcomm Snapdragon S4 Pro with the Adreno 320 crunching graphics. 2GB of RAM is on board, while there is 32GB of native storage inside the slate. There is no microSD slot on the tablet, and the 5MP rear-facing camera does not have a flash. The front-facing snapper weighs in at 1.2MP. The whole shebang is powered by a 3950mAh cell and Android 4.3 is pre-installed.
source: GooglePlayStore (AT&T|T-Mobile) via MobileBurn