Today's update adds support for HDR (High-Dynamic-Range) environments and enhances the image quality for both Rift and Vive users through improvements to the SRGB pipeline.
This update adds 2 free HDR environments: Space Sky which is a high quality Cubemap and Home Cinema, a rich and polished model environment which is perfect for watching movies.
The behavior of the close button (X in the upper right) was changed to exit the app and a minimize button with an option to minimize to tray was added.
This update also contains a workaround for a Steam bug that considered the app as still running after exit and prevented you from re-launching it in VR.
It also includes a fix for the video player sometimes crashing with Windows 10 Creators Update.
Update 1.3.1 fixes a brightness issue with stereoscopic 360 photos and a bug with SBS/OU mode in theater environments.
Enjoy!