Added hou.Geometry.primTypeNames() and hou.Geometry.primTypeLabels() to return a list of all primitive type names / labels, including custom primitive types loaded at runtime.

Fix the ability to select sliders in the Light Mixer LOP in Qt6 builds.

Fixed an issue with Karma that prevented the "overrideobject" property from working properly.

Fixed a typo in an error message in APEX Script when attempting to use a namespaced callback without the 'apex.' prefix.

Fixed warnings about the "RunCommandForRepository" option being ignored when submitting Deadline jobs from the Deadline Scheduler TOP node and with the Repository Path parameter checked on.

Fixed a bug introduced in 20.5.544 where moving keys in the Animation Editor would crash houdini if empty channels were present.

Fixed crash trying to use an international character in a channel name in CHOPs.

The TOP Fetch and the underlying topcook.py job script now have an option to only cook the output work items and their dependencies, rather than doing a full graph cook up to the output node. This option can be enabled by choosing the "Output Work Items" cook type on the TOP Fetch, or by passing the "--workitems" argument to the topcook.py script.

Fixed an issue in the Quick Shapes tool where it would not create the shapes in the right location when in LOPs.

Fixed a bug where the reverse foot doesnt work with non standard orientations.

Fixed library loading and symbol errors when importing the HOM hou module into a regular Python process on macOS.

Added support for 3ds Max 2026.

Fixed an issue with non-background rendering Hydra delegates rendering twice per redraw when Vulkan is active.

Add missing nodes for array::Find<ApexNodeID> and array::Find<ApexPortID>.

Removed the Mute/Unmute Channel options from the Channel List's RMB menu for apex channel primitives, as these were not working properly.

Fixed a bug where LPE-based albedo for glossy transmission would incorrectly contribute to glossy reflection albedo instead.

Fixed a bug where large scaling on objects with deformation motion blur and displacement could cause bad shading normals.

Fixed a bug where an empty mesh may fail to populate if the mesh is no longer empty upon IPR update, or in subsequent frames if rendering multiple frames within single process.

Karma will now properly update in IPR when a displacement shader references a COP texture. This requires "Continuous Dicing" to be enabled.

Added a parameter to the ROP Fetch and ROP Geometry TOP nodes that controls whether distributed sim trackers are managed using hostnames or IP addresses.

There were optimizations made to texture evaluation on machines with large numbers of cores (esp. with NUMA architecture).

The work item script or command line string can now be overriden per-node, using an override parameter in the "Schedulers" tab.

Fixed missing DOP guides when inside a DOP network.

Fixed an issue that could cause Houdini to crash rendering subd meshes in the viewport with Vulkan.