I'd stick to https://semver.org/ whenever possible :) This also helps Nexus and Maven make correct decisions.
8.0.1 would be a bugfix, 8.1.0 would be new APIs are added but all old APIs remain, 9.0.0 would be old apis removed and possibly new stuff added. -- Sent from: http://tomee-openejb.979440.n4.nabble.com/TomEE-Dev-f982480.html