More information about this release can be found here.
The 1.37 Oculus Integration for Unreal adds development support for the Rift S headset.
Added support for Android External Surfaces to support high-definition video playback to Unreal compositor layers.
Added support Equirect compositor layers.
Updates to the Oculus Platform Tool to support additional launch settings and expansion files.
Vulkan updates -
Fixed miscellaneous MSAA bugs.
Added support for sRGB render target.
Added engine-side support for FFR. This feature will require a future Oculus Quest runtime update for end-to-end support.
Added engine-side support for multiview. This feature will require a future Oculus Quest runtime update for end-to-end support.
A significant drop in frame rate occurs when UE4 is not in focus in VR preview mode. To avoid this issue, uncheck the Use Less CPU when in Background in Edit > Editor Preferences > General (left sidebar) > Miscellaneous (left sidebar) > Performance.
Exclusive Mode issues: Setting the mirror window to full-screen exclusive mode will not work correctly if the monitor and HMD are connected to different GPUs.
I can see UE4 VR Preview in the Rift S after merging and building the oculus github source. Previously with Epic's source build I was just getting a blank screen. However oculus touch controllers for the Rift S are still not responding.