Following this discussion - We are concerned after the retirement of version 17 so suddenly at end of year.  We are experiencing several issues on 17 and told to upgrade to 18, but have not yet.  Considering waiting for 20, but haven't seen anything about release.

The 2019 releases were released as versions 18.3.1 and 18.4.1

There is an update for 18.4.1 going out sometime this month. There will be a major release sometime later in the spring of this year. The exact date and version number that will be assigned to the major release has not yet been determined