Like mlcp, I dont see any compatibility comments related to corb2 with latest MarkLogic versions. Is CoRB2 compatible with all ML versions? If not, is there a location I can refer to? I know I can test it out, but it is better to check documentation as I might miss some tests.
CoRB2 should be compatible with all currently supported versions of MarkLogic.
Unlike MLCP, CoRB is a community driven open source effort and not an officially supported MarkLogic offering, so I would not expect to find compatibility information about CoRB versions in the MarkLogic documentation.
If there were to be a compatibility issue, it would likely be if there were a breaking change to the XCC library used to communicate with MarkLogic. Since the XCC library is a MarkLogic supported offering, you can expect that any breaking changes will be noted in the MarkLogic release notes. For instance:
CoRB is built and tested with the latest available XCC and MarkLogic versions. If there were to be a breaking change, it would be noted in the CoRB README.