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PrmanObjectStatements conversion script will now convert legacy "prmanStatements.attributes.shade.shadingrate" to "prmanStatements.primAttributes.dice.micropolygonlength"
Added support for "hole" tag via "geometry.holyPolyIndicesholePolyIndices" attr in "subdmesh" locations
Change default for option trace worldorigin to "camera"
New Preset Browser nodes are now correctly set as editable
PrmanPresetBrowser can now directly assign assets to selected scenegraph locations. New asset nodes are now combined into a single, floating group for immediate addition to Katana recipe.
Preset Browser : Imported assets now have a built-in MaterialAssign which can be set or modified via the enclosing Group's CEL statement
Data window and display window are now supported for DeepEXR outputs
The "autocrop" option is now available for raw OpenEXR outputs
The user:maxtextureresolution and user:texturemipbias attributes are now exposed in PrmanObjectStatements
Materials can be referenced inside procedurals via their scenegraph location
Live render edits to the rendererProcedural attribute are now supported
Support relativeScopedCoordinateSystems entries that don't start with '/' (the format produced by PxrUsdIn)

Adding locations that are children of /root during live render now works
Fixed bugs in legacy attribute conversion op which could lead to incorrect values
Preset browser import no longer fails on bad parameter data. Instead a warning will be printed and the parameter will be ignored
RfK will now correctly terminate the render on error locations
Muting the parent of a light filter now correctly mutes all light filter references
Single-element instance array primvars are now handled correctly
Fix crash in Viewer and Hydra Viewer when muting a light with a light filter reference that has "Lock Size to Cone Angle" enabled
RfK will now correctly terminate the render on error locations
Adding and removing portal lights from a dome during a live render is now correctly handled

Creating a mesh light from existing geometry will duplicate the geometry in-render. Restart the render to remove the duplicate.
Adding a portal light to a dome light doesn't delete the dome light
Cannot change a geometry primitive type during live rendering (e.g. from NURBS to polymesh)
Edits to mesh light parameters require that the geometry location is enabled in the live render working set
When assigning a material to a Scene Graph location, that location must be enabled in the live render working set
Cannot create new volumes or enable existing-but-disabled volumes during live rendering.
The Katana Viewer will crash when muting a light with a light filter reference with "Lock Size to Cone Angle" enabled

When rendering to "it" from Katana, do not stop the render from "it", abort the render from Katana. Your Katana session may freeze for a time if you abort from "it". If you make this mistake you can restore Katana to operation by terminating the prman render process manually. This will be fixed in a future version. You can also avoid this entirely by rendering to the Katana Monitor.
Light Linking volumes is not currently supported
We do not receive live render edits from Katana for nodes added at the end of the node graph, right above the Render node. If a no-op node (e.g. Merge) is inserted above the Render node and the node is added above that then the edit is received.
Any live updateds updates will cause interactive motion blur to be disabled. The render must be restarted.
Support for light arrays of mesh lights is coming in a future version of 22
Render is not correctly terminated when errorHandler = 'abort', this only aborts traversal, not the render
PRMan error handlers are not fully supported yet.
Instanced lights with filters using the "Light Filter" coordsys have an incorrect transform. The workaround is to promote the light filter to a shared light filter using a light filter reference.
There are a few live render limitations in Katana 2.6 that have been resolved in Katana 3.0 based on the improvements to 3.0, typically limitations with live working sets and adding/deleting locations in 2.6

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