Pixar had updated its API for creating Sub-D surfaces with the addition of triangular patches for loop subdivision, sparse patch tables, dual precision support, and improved documentation. Read the full specification on Pixar’s website.
OpenSubdiv 3.4 released
CGPress is an independent news website built by and for CG artists. With more than 15 years in the business, we are one of the longest-running CG news organizations in the world. Our news reporting has gathered a reputation for credibility, independent coverage and focus on quality journalism. Our feature articles are known for their in-depth analyses and impact on the CG scene. “5 out of 5 artists recommend it.”
…and 3ds Max still on 2.4 version https://forums.autodesk.com/t5/3ds-max-ideas/opensubdiv-update-to-latest-version-of-lib/idc-p/8885896
It seems so or it would have been an announced new feature with all the bells and whistles