We have been informed by a trusted source that HTC’s One X, one of the best smartphones ever to come out of Taiwan, will be available on AT&T as early as this week. We have also been told that AT&T may announce availability details tomorrow, and that the handset’s release should follow within five to seven days of the carrier’s announcement. AT&T’s version of the HTC One X swaps out the quad-core Tegra 3 processor for a dual-core Snapdragon CPU in order to accommodate 4G LTE connectivity, but unlike the complete redesign we saw on Sprint’s EVO 4G LTE, the AT&T version should be nearly identical to the international model.