Modeling
Reflection feature for Rotate and Scale tools
Multisplit profile curve attribute added to Insert Edge Loop Tool
Fix Quads option for Insert Edge Loop Tool
New attributes for Offset Edge Loop Tool
Paintable deformer weights for Transfer Attributes
UV and Component sampling options for Transfer Attributes
New Vertex Normal option for Transfer Attributes
Relax sculpting
Display of user defined normals
New Quad split attribute
New tangent smoothing options
Improvements to Attach Curves
Color chooser editor improvements
UV Mapping
Move UV Shell Tool enhancements
Animation
Full Body Inverse Kinematics enhancements
Geometry caching enhancements
Geometry cache threading
Copy Skin Weights improved
Mirror Skin Weights improved
New Graph Editor toolbar icons
Rendering
Enhancements to Hypershade
Connection editor enhancements
New Open Render View icon
Transfer Map tool enhancements
mental ray for Maya rendering
Render Settings enhancements
Improved mental ray Render Option editor and mental ray Batch Render Option editor
Maximum number of render threads increased
Enhanced method of simulating sun and sky
New architectural material shader (e.g. BRDF)
New round corners shader
New tone mapping shader
Enhancements to Volume fur rendering method
Bake to HDR file format
New appendices added to mental ray for Maya documentation
Hardware rendering features
Enhancements to CgFX shader node
Maya now supports Cg version 1.5
Artisan and Paint Effects
New Paint Effects brushes
Paint Effects brush callbacks
Fur
Enhancements to Volume fur rendering method
Improved fur interpolation along UV border edges
Hair
Follicle control enhancements
nCloth
There is a new simulated cloth solution called Maya® nCloth? in Maya 8.5. nCloth is a fast and stable dynamic cloth solution that uses a network of linked particles to simulate a wide variety of dynamic polygon surfaces. For example, nCloth is flexible enough to simulate objects such as fabric clothing, inflating balloons, shattering surfaces, and deformable objects.
nCloth is built on the new dynamic simulation framework called Maya® Nucleus?. A Maya Nucleus system is composed of a series of nCloth objects, passive collision objects, dynamic constraints, and a Maya Nucleus solver. The Maya Nucleus solver calculates an nCloth’s simulation in an iterative manner, improving the simulation after each iteration, to produce accurate cloth behavior.
Directable cloth simulation
Component collisions and collision layering
Dynamic constraints
Inflation, deflation, and volume preservation
Tearing and shattering
Surface restitution