Looks like Google Editions of Galaxy S4 and HTC One will have an updated interface of the camera. The Application contains quick access to HDR when you press and hold on the screen, and the volume rocker can be
used to take photos.
“More options” presents all the advanced options in the same semi-circle (seen above). Good news is that if you want to try new camera for yourself, (complete with landscape features (Panorama) if your device does not have it) APK is available at the source link below.