MicroProfile Reactive Streams Operators 3.0 is to align with Jakarta EE 9.1 as well as a bug fix in its TCK, detailed below.
TCK fix: Loading ReactiveStreamsEngine and ReactiveStreamsFactory should also work running with a security manager (link:https://github.com/eclipse/microprofile-reactive-streams-operators/pull/170[#170])
There are no functional changes introduced in this release, except updating the dependencies from javax to jakarta
This release aligns with Jakarta EE 9.1, so it won't work with earlier versions of Jakarta or Java EE. Therefore, this is a major release.