It looks like the plantuml webserver http://www.plantuml.com/plantuml is lagging with the versions a little bit
it reports:
1.2020.09beta3
whilst the latest version is at the moment:
1.2020.09beta8
(--------)
Yes, there are two kind of beta :
That is clear and understandable. I was under the impression that all beta versions were pushed to the web server, but it doesn't make sense to do this when the version is not stable.
Thinking aloud about this: