When the Galaxy SII launched on AT&T, it was a perfectly great phone by itself, but it could have been better. So AT&T released the Galaxy SII Skyrocket, which included LTE into the equation. But the screen wasn’t as good as it could have been. Now AT&T is releasing the Skyrocket HD which has LTE and the HD Super AMOLED screen. That makes 3 different iterations of the same phone to be released on the same carrier. But, if you haven’t purchased a Galaxy SII yet, this will be the one to get, whenever it actually lands on the carrier.