This is a hotfix release. It addresses the following issues:

• Shadow Matte alpha was incorrect
• ID AOV in the Arnold RenderView was not supported
• Memory pools allocations are much bigger than requested
• Standard Surface viewport shading was not working in Maya 2016
• XGen failed to render on multiple patches
• Render to Texture shelf icon was launching light manager
• SynColor extension was missing in 2016_R2
• fixed error message in Render to Texture about color management
• Nodes contained in .obj and .ply procedurals are registered in the global name scope
• Standard surface coat normal not decoupled from main normal
• LPEs were not working with Raw drivers
• Curves with varying UVs were rendering wrong
• UINT parameter values are clamped to 0x7FFFFFFF when parsed from .ass files
• Properly handle cases where cpuset is smaller than the detected number of cores
• ignore_motion_blur with non-zero reference_time does not work with a polymesh with normals
• normal_map shader issues
• Missing Python bindings for some AtNodeEntry API functions
• AiNodeEntryGetDerivedType wrong for builtin procedural and implicit nodes