Their project blog is dormant but these changes look like worth sharing.

v2.0.2 Latest Notable enhancements and fixes Fixed the locale loading in the admin panel Added OAuth2.0 support for the Etherpad API. You can now log in into the Etherpad API with your admin user using OAuth2

v2.0.0

First of all I am very happy to announce the second major version of Etherpad. During the course of the last months we have updated all dependencies, cleaned up some of the old Etherpad code and converted most of the things to Typescript.

See the Enhancements part.