TheVerge has just learned that the previously-upcoming Galaxy S II Skyrocket HD, an upmarket version of the Galaxy S II with LTE and a larger HD display, will not be released.
Previously announced at CES, the HD would have been the flagship Samsung device in AT&T's lineup. In light of the launch of the HTC One X, though, the HD was simply outgunned. Rumors prior to the launch of the Galaxy S III also indicated Samsung had moved up the release date of the next Galaxy in order to get a leg up on the competition (namely, HTC). This suggests that the HD was planned under a different timeline - one where the S3 may have been coming to the US significantly later.