Here's a trailer for XrayCat ST 1.5 for 3ds Max.
Houdini Engine for Autodesk Maya
SideFX have released Houdini Engine for Maya, with 3ds Max and Unreal versions coming soon.
Corona Renderer Alpha V6
After 9 months of development, Corona Renderer have released version Alpha v6 of their currently free biased/unbiased CPU renderer.