Update to HTC Camera app available for HTC One (M8) for Windows10
So you're probably wondering what the difference is between Pan 360 and Panorama, right? Settle down, we're getting to that part. Pan 360 will allow you to take panoramic shots horizontally on a plane and also vertically along the axis. Unfortunately, the HTC Camera page in the Windows Phone Store doesn't include a changelist, so we hope that those of you with the device will pass along any new features.
Possibly a new feature is the "Swap Camera" option that allows users to switch from the back-facing camera to the camera in front by swiping across the screen. The HTC Camera app is a free download from the Windows Phone Store. If you've already installed the app, keep an eye peeled for the update.
source: HTCCamera (Windows), WindowsCentral via WMPoweruser