BxDFs: Fixes some of the artifacts in Lama when low poly meshes are used in addition to bump maps. The artifacts are only visible when the parameter "adjustAmount" in PxrBump is different to its default value of 1.0. RMAN-XXXX
BxDFs: Lama albedo AOVs should now correctly take tint parameters into account. RMAN-20423
Volumes: Fixed a memory leak in PxrPathTracer when aggregate volumes were used. RMAN-20830
Light Filters: A new light filter named PxrCheatShadow has been added. It allows the shadow position to be compute as if the light originated from a different Distant or Point light, but where the luminance is computed as normal from the light position. It also provides control over light linking, so we can independently change both the geometry which casts the shadows and what receiving geometry sees that change.
Baking: Fixed a crash that could result when baking UDIMs for materials using Lama networks. RMAN-20651
Integration: Switched from MIS to Resampled Importance Sampling for weighting pathguiding and BxDF samples. This only has an effect if pathguiding is enabled, and provides significant convergence improvements in a number of cases, particularly for surfaces with lower roughness.

LPEs and AOVs: Indirect LPEs in XPU now match RIS better for the case of surfaces with multiple lobes and high specular roughness. RMAN-19902
Volumes: A significant bug in minlength dicing causing artifacts in XPU volumes when using dsominmax 0 has been addressed. RMAN-20764
Volumes: A XPU bug which caused cameras inside volumes to consume all memory when rendered in RfH has been fixed. RMAN-20823
Volumes: Implemented trilinear filtering of volumes as nearest neighbor with random jitter. RMAN-20765
Cameras: Fixed a bug that caused Ri:Shutter 0,0 to render blank images in hdPrman. RMAN-20621
File Output: If XPU attempts to write an output EXR file to a file path that doesn't exist, it will no longer crash. RMAN-20791
Lighting: Fixed a crash that occurred while using dome lights with textures. RMAN-20294

Hydra and hdPrman: Change the default pixel filter to importance. This is the only mode supported by XPU, and is the mode that is required by the denoiser. RMAN-20617

Solaris: Fixed a crash that could result when switching to XPU if a RIS live render was already running. RMAN-XXXX
Solaris: Improvements to the data window and display window calculations. RMAN-20796
Solaris: Properly set the mse attributes in AOVs for denoising. RMAN-20783
Solaris: Fixed an issue where if the sampleCount AOV was requested and XPU was the renderer, a black screen could result. RMAN-20784
Solaris: Manipulating/editing dome lights in XPU interactively now has better performance. RMAN-20320
Solaris: Cryptomatte filenames will now take into account husk tile suffix. RMAN-20696
Removed the asymmetry denoiser parameter from the RfH UI. RMAN-20672

Fixed bugs with the enable checkboxes in the PrmanStylizedLooks macro:
- Added two switch nodes to fix an error when all display filter checkboxes are disabled. The SNAC node would complain that there were no connections.
- Added an OpResolve node after the display filter network material to fix an issue where the enable checkboxes wouldn't update the live render correctly unless Flush Caches was pressed

Solved a crash that may have occurred when exiting Maya if you were using the Hydra-based RenderMan render delegate for rendering to the viewport. RMAN-XXXX
Fixed a bug affecting the invalidation of non .tex textures in XPU where the updated texture from the Texture Manager would not be rendered. Instead the old texture before the invalidation would be used. RMAN-17686
Removed the asymmetry denoiser parameter from the RfM UI. RMAN-20672

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