Wow, looking forward to HTC One Android 4.2.2 update. Based on the source, the update will bring the much awaited percentage battery level indicator and EQS (Extended Quick Settings).
There are also other enhancements such as daydream, long press home button and etc.
Not sure when the update will arrive. I hope it will be soon. One of my greatest miss from Samsung is the percentage battery display and EQS. Now, it will be available on HTC One, I am satisfied. BTW, this information is not official from HTC but from some leaks. So, you should know the drill.