HTC’s VP of Product Management, @moversi, took to Twitter to announce that the company will start rolling out the Android 4.4.3 update for the HTC One M8 from late next week. Android 4.4.3 was mostly a bug-fixing release and most of the visible improvements introduced in it were mainly for the Nexus devices.
The update is only for the unlocked and international variant of the HTC One M8 with no word on as to when the carrier variants would get the update.
— Mo (@moversi) July 15, 2014
As to why not directly updating to Android 4.4.4, @moversi replied that the security fixes Google introduced in Android 4.4.4 has already been incorporated in the Android 4.4.3 build for the HTC One M8.
Apparently, some owners of the international and unlocked variant of the HTC One M7 have already started receiving the Android 4.4.3 update on their devices.
Apart from Google, Motorola is the only OEM that has already updated its devices to Android 4.4.3, and very recently started rolling out the Android 4.4.4 update for them. If HTC manages to stick to its timeframe, it would beat the likes of Sony and Samsung in rolling out the latest build of KitKat to users of its high-end devices.