In the interest of simplifying version compatibility, OpenMAMA's next release version is going to be 6.1.0. I appreciate it's a big jump but it should make the following things clear to the community and anyone watching the project:
OpenMAMA is the equivalent to Vela's "MAMA 6" (Vela have also agreed to move to 6.1.x to align with OpenMAMA).
Users of both Vela's Enterprise release of MAMA and OpenMAMA can easily see what equivalent versions will be.
Users upgrading from MAMA 5 can have more sane #ifdefs in their code if they're trying to support both versions during migration.
I plan on taking the cut within the next week, so if anyone has any issues that they would like to be included or patches you would like to be included in the next release, please reply to this thread with details.