Jason Machenzie, HTC America’s President had earlier revealed that the HTC One (M7) would get the Sense 6 UI treatment this month and now, the update is rolling out in the United States. The update is now rolling out to Developer Edition and unlocked HTC One M7 owners.
The update size is about 668MB. Here is the change-log
new interface for the Gallery and Camera apps
better theme /font support and Extreme Power Saving mode.