The Google Play Edition HTC One has started receiving the latest Android 4.4 KitKat update. The 320 MB update should be available over the air. The update is coming to devices automatically, as usual – some handsets are receiving the update and some have to wait.
Android 4.4 OTA update is now rolling out to HTC One Google Play Editions, but you can also download it from the source link below. HTC has also released the source codes for the stock and framework components of the HTC One GPe.[Source]