This is sad news for AT&T owners of the HTC One M8. HTC apparently had to halt the roll-out of the Android 4.4.3 update to the AT&T version of the device due to severe battery drain issues discovered at the last minute by users.
HTC felt the issue was widespread enough to halt the update for review. Here's a quick breakdown of what the update will include once HTC irons out the issues and gets it rolling again.
- System Improvements - Android 4.4.3, Security fixes
- Performance optimization - Wi-Fi, Bluetooth, Mobile network
- Sense experience optimization - Boomsound, Extreme Power Saving Mode, Motion Launch, Quick Setting
- Application updates - Camera, Gallery (Image Match), Settings (Power History), HTC Sync Manager
Source: PhoneArena