OpenVDB plugins for Maya and Arnold, provided by Evgeny Grebennikov.
pointCloudFluidEmitter - added support for auto-resizing of fluid containers.
Morph - complete integration of inbetween and combination targets.
BlendShapesManager - a whole new approach to working with blend shapes.
mirrorMesh - powerful tool for mirroring of mesh objects.
Viewport 2 is now supported in SOuP.
Kwai Bun (manymany) provided two excellent videos showcasing some of the main Morph features:
smoothSimple - fast and multithreaded smooth deformer. It is similar to the original smooth node but lacks the volume preservation features (that prevented me from speeding up the original one).
smooth - optimized connectivity lookups, volume preservation and few other minor things.
group - added useInComponents options under the "depth" section
morph - significant optimizations to the standard "edit targets" mode. Now it is getting closer to the "performance mode" when having tens to few hundred targets. But once the number of targets increases (hundreds or thousands) the peformance mode will pull ahead.
intersections - i noticed that this tool got lost (not available in the UI) for probably quite some time - brought it back - it is under the wrench shelf button.
componentToComponent - fixed bug that caused improper conversion from vertex to edge/face in some cases.