Update what's new.md

- Added option to change the teleportation duration in the VRExperienceHelper class
- Added support to teleport the camera at constant speed in the VRExperienceHelper class

dist/preview release/what's new.md

@@ -150,6 +150,9 @@
 - Preparing to deprecate supportsSession in favor of isSupportedSession ([RaananW](https://github.com/RaananW/))
 - Added onControllerModelLoaded observable for WebXR ([RaananW](https://github.com/RaananW/))
 - UI Button has options to set different session mode and reference type ([RaananW](https://github.com/RaananW/))
+- Added option to change the teleportation duration in the VRExperienceHelper class ([https://github.com/LeoRodz](https://github.com/LeoRodz))
+- Added support to teleport the camera at constant speed in the VRExperienceHelper class ([https://github.com/LeoRodz](https://github.com/LeoRodz))
+
 
 ### Ray