Our first production build for Houdini 20 is now online.
Here's all the changes that went in since we released Houdini 20.
https://www.sidefx.com/changelog/?page=4&journal=20.0&categories=&body=&version=20.0&build_0=506&build_1=547&show_versions=on&show_compatibility=on&items_per_page=