Just wanted to point out something not very obvious for those upgrading to 5.8.0 version of ActiveMQ: after the upgrade, my init startup script failed and I've noticed run.jar is missing from bin/ directory. I looked through release notes and there was no mention of this change. Finally I was able to figure out that activemq.jar is the renamed run.jar due to similarity in size.
Because we use our own init scripts rather than those shipped with ActiveMQ, this was a very non-obvious change, so I thought I'd point it out to those who are looking to upgrade and are also not using provided init scripts. -- Best regards, Dmitriy V.