Update what's new with warnings

dist/preview release/what's new.md

@@ -3,9 +3,9 @@
 ## Major updates
 
 - Added support for [parallel shader compilation](https://www.khronos.org/registry/webgl/extensions/KHR_parallel_shader_compile/) ([Deltakosh](https://github.com/deltakosh))
-- Added FlyCamera for free navigation in 3D space, with a limited set of settings ([Phuein](https://github.com/phuein))
-- Added Object Based Motion Blur post-process ([julien-moreau](https://github.com/julien-moreau))
-- WebXR ([TrevorDev](https://github.com/TrevorDev))
+@NEED DEMO- Added FlyCamera for free navigation in 3D space, with a limited set of settings ([Phuein](https://github.com/phuein))
+@NEED DEMO- Added Object Based Motion Blur post-process ([julien-moreau](https://github.com/julien-moreau))
+@NEED DEMO- WebXR ([TrevorDev](https://github.com/TrevorDev))
   - Add customAnimationFrameRequester to allow sessions to hook into engine's render loop ([TrevorDev](https://github.com/TrevorDev))
   - camera customDefaultRenderTarget to allow cameras to render to a custom render target (eg. xr framebuffer) instead of the canvas ([TrevorDev](https://github.com/TrevorDev))
   - webXR camera which can be updated by a webXRSession ([TrevorDev](https://github.com/TrevorDev))