Update what's new.md

onPhysicsCollide update

dist/preview release/what's new.md

@@ -52,6 +52,7 @@
     - Fixed tube and extruded shape cap light artifact  ([jerome](https://github.com/jbousquie))
     - Fixed a bug calculating velocity during collision with gravity enabled. [PR](https://github.com/BabylonJS/Babylon.js/pull/738) ([RaananW](https://github.com/RaananW))
     - Fixed a bug in instance serialization. [PR](https://github.com/BabylonJS/Babylon.js/pull/726) ([RaananW](https://github.com/RaananW))
+    - AbstractMesh.onPhysicsCollide will be triggered when a physics-enabled mesh collides against another. [PR](https://github.com/BabylonJS/Babylon.js/pull/806) ([RaananW](https://github.com/RaananW))
   - **Breaking changes**
     - `VertexData.CreateCylinder()` now supports only the single _options_ parameter ([jerome](https://github.com/jbousquie))
     - `VertexData.CreateRibbon()` now supports only the single _options_ parameter ([jerome](https://github.com/jbousquie))