Apple iPad 2 goes on sale today and the customers can start ordering on Apple website at 4am Eastern Time today. However, one who wants to purchase it in a store have to wait until 5 p.m. (Eastern Time). Apple's retail partners will also start selling at the same time.
There are two models available, one with only Wi-Fi and the other comes with Wi-Fi + 3G. Both the models comes in different storage capacities 16GB, 32GB, 64GB and they are available with two carriers in USA one AT&T GSM/EDGE (850, 900, 1800, 1900 MHz) and the other Verizon CDMA EV-DO Rev. A (800, 1900 MHz).