Android's Google+ page announced that the Google Play Edition of the S4 should start seeing OTA updates as soon as November 25 - though 4.4. is definitely on its way, keep in mind, it may still take some time before it arrives.
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Android Authority is reporting a 300MB over-the-air update of KitKat is rolling out to the HTC One, Google Play Edition right this moment.
But users at least get a lengthy range of other improvements with KitKat - the interface is much cleaner and boasts changes that help condense your device's memory.
Be on the look out
The Google Play Edition of the Samsung Galaxy S4 should also be receiving KitKat, possibly as soon as today or this week since both the S4 and One saw a same day Android 4.3 update.
Once the Galaxy S4 is updated, Google should be done with KitKat - at least until 2014 when the rest of the HTC One batch gets 4.4.