The Android 4.4.2 update should bring better overall performance along with goodies that HTC has thrown into the mix thanks to an updated Sense 5.5 user interface.
BlinkFeed has a new menu which will give you quicker access to content. Also, location settings have been refined which should offer the opportunity to enhance battery life. The list shows which apps are using location settings so you can see which ones might be affecting battery performance the most.
The photo gallery has been updated too, allowing faster access to photos that are connected with social networking or the cloud. There is also a new do-not-disturb feature joining the fray. There have been some changes to the music application, widgets are easier to add to home screens, and HTC has bolstered the photo software for better low-light performance.
Has your AT&T HTC One received the KitKat update yet?
Thanks Harrison for the tip!