Engadget readers are reporting that ATT.com is accepting pre-orders for the 16GB Galaxy S4 from customers in certain areas . It's unknown why AT&T has not opened pre-orders for everyone, but US Cellular, who is also supposed to start accepting pre-orders today, also hasn't opened its GS4 page at the time of this post. Engadget has also learned that AT&T is promising an April 30th shipping date, and is offering the GS4 off-contract for $639.
AT&T customers can kill some time by doing some case shopping while they wait for pre-orders to open. Case-Mate is currently accepting orders for their Barely There, Tough, Glimmer, and other signature cases for the Galaxy S4. Zagg has opened orders for their popular invisibleSHIELD screen protectors, and a few Speck CandyShell cases in various colors have popped up on Amazon.