Samsung Galaxy Note 2 and Tab 2 10.1 Coming to AT&T
Android Central

AT&T will be carrying Samsung's LTE-ready Galaxy Tab 2 10.1 as well as the smartphone/tablet hybrid Galaxy Note 2. The network has not announced pricing and only said that availability will be "in the coming months". The Galaxy Note II has a 5.55-inch display with 720p resolution, a 1.6 GHz quad-core processor, 2 GB of RAM, up to 64 GB storage, and Android 4.1 Jelly Bean operating system. The Galaxy Tab 2 10.1 offers a 10.1-inch display, the one-year-old Android 4.0 Ice Cream Sandwich, 1 GHz dual-core processor, and a long-lasting 7000 mAh battery.

What Else You Need To Know

  • AT&T also announced it will be releasing mid-level LTE-ready smartphones Galaxy Express (4.5-inch Super AMOLED Plus display), and Galaxy Rugby Pro (military grade, waterproof and shock-resistant).
  • AT&T says its customers have access to the nation’s largest 4G network, covering 275 million people.

Other sources

Very similar to its predecessor the Galaxy Tab 10.1, the Tab 2 10.1 includes a 10-inchPLS display with 1280 x 800 resolution, a dual-core TI processor clocked at 1GHz, 1GB of RAM and 16GB of internal storage. - Kelly Hodgkins, IntoMobile  
Android Central
Samsung and AT&T announce Galaxy Note 2, Tab 2 10.1, two mid-range LTE devices  

They don't say anything about pricing or availability for any of these, other than that they'll be landing "in the coming months". That's not particularly helpful, but them's the breaks. At least we're pretty sure that we'll see the Galaxy Note 2 in November.

SlashGear
AT&T 4G LTE expands with four new Samsung smart devices
IntoMobile
AT&T adds Samsung’s Galaxy Tab 2 10.1 to its tablet lineup  

Very similar to its predecessor the Galaxy Tab 10.1, the Tab 2 10.1 includes a 10-inchPLS display with 1280 x 800 resolution, a dual-core TI processor clocked at 1GHz, 1GB of RAM and 16GB of internal storage.

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Samsung Galaxy Tab 2 10.1 with 4G LTE Headed for AT&T