First, I realize that this thread is likely to cause a fight based on past history and probably not go anywhere, but with the work being done with Jakarta for AMQ 5.x I think it's time to at least bring up the ActiveMQ 6.0 discussion.
With all the breaking changes currently targeted for version 5.19.x, such as the Jakarta switch from javax, requiring JDK 17, major Spring and Jetty upgrades and now potentially major OSGi changes, it makes zero sense to me to have this next AMQ version as version 5.19.0 as it's completely incompatible with the previous version 5.18.x. Users are likely going to be in for a rude awakening when trying to upgrade and will be quite confused as to why so much is different. The Jakarta changes should really be a major version upgrade so that it's much more clear to users that it's very different from the previous version. Another major benefit of going with version 6.0 is that it frees up the previous javax releases to continue on with 5.19 or 5.20 because we will likely need to support the older javax releases for quite a while. Also, from my point of view it seems pretty clear that the original goal for Artemis to become AMQ 6.0.0 is never going to happen. Artemis has had its own branding and versioning for several years now and will likely continue that way and not change so I don't really see that as a reason to not bump AMQ 5.x to 6.x with all the major breaking changes. Anyways, I figure there won't be much agreement here but thought I should at least throw it out there before we go and release 5.19.x with such major breaking changes.
