V-Ray 3.1 for Maya
V-Ray 3.1 for Maya contains over 100 new and modified features, including support for Maya 2016.
Golaem Crowd 4.0
See the new features in the new Golaem Crowd 4.0 crowd simulation plug-in for Maya.
Houdini Engine for Autodesk Maya
SideFX have released Houdini Engine for Maya, with 3ds Max and Unreal versions coming soon.