Modeler 2022 for Houdini has been released with a redesigned plugin core and improved user experience for tablet users. Improvements include:
Modeling tools and Houdini shelf tools are collected in the Python panel. This panel has a Favorites section for storing user scripts and shelf tools.
When Modeler is activated, a new toolbar, called Viewbar, appears above the viewport to speed up modeling on tablets
Modeler no longer has its own shelves
Any Modeler Python panel button can be associated with hotkey
The Houdini window can be made translucent for modeling on top of images from the operation system desktop
Pen double-clicking in the viewport works naturally, as opposed to standard behaviour
The viewport camera can be manipulated with the right mouse button
Modeler now has only one radial menu which contains the most important direct modeling and retopology tools. In addition to hotkeys, it can be shown with the right mouse button.
To repeat the EdgeLoop viewport state, you can click the left mouse button
Selection tools can now modify components in the reselect mode of SOP node
New Group Hard Edges tool selects hard edges easily
As part of improved work on tablet devices, empty selection is now perceived by tools as whole selection
Removed the Drop Selection tool (Escape key). Instead, you need to use component selection modes: points, edges, and polygons.
PolyPen has new modeling features and is better adapted for use on tablets
Push renamed to Magnet
New Polygons tool allows to quickly draw polygons or perform retopology.
Extrude, Bevel, and Bridge now use standard Houdini nodes
New Bevel Pro tool creates bevels with variable radius
To constraint middle mouse button transformation (Grab state), you can click the left or right button while moving the mouse
Modeler has its own VDB Remesh node and tool
Hose has been improved
QPrimitive node now has an input connector intended for automatic orientation and
scaling, like standard primitive nodes
Primitives can be created in the same geometry container
The Fill tool rebuilds selected polygons with the new Quadrify node
Preview Subdivided has an additional mode to display SubD isolines
New UDIM Export node is useful for easy creation of complex UV maps
Source: https://blog.superrendersfarm.com/tutorial/houdini/modeler-2022-for-houdini/