About a week ago it was revealed that AT&T let slip an upgrade to Android 4.0 for some HTC Vivid. Whether it was an accident or a test, it doesn't matter now – everyone should be able to pull the OTA update. It'll step you up to Android 4.0, of course, but there are other details you'll want to know about. As rumors have suggested, the device will only get HTC Sense 3.6 instead of the massive Sense 4.o update that can be found on the HTC One devices. This is due to the device not having an S4 or Tegra 3 processor.
Android Phone
See also:
techage, Android 4.0 for HTC Vivid Officially Rollling Out