Update: The OTA has started rolling out to devices. If you're a Verizon HTC One owner, it's time to check your phone. But be advised - the rollout is staged.
An HTC product manager announced this morning that Verizon had approved the Android 4.4.2 update destined for its version of the HTC One. The OTA is on its way, though we don't yet have a date. Nevertheless, Verizon has now uploaded a document detailing what to expect in the update.