I just created the M3 Branch: JBOSS_MAIL_M3
There is not yet a release tag (and I goofed in not creating one for RC1) yet but will be when I cut the release (tomorrow, public announce on monday). For those who are able, some additional testing tonight would be appreciated as well as some help in updating the documentation (http://wiki.jboss.org/wiki/Wiki.jsp?page=JBMSInstallingM3 especially http://wiki.jboss.org/wiki/Wiki.jsp?page=HowToInstallJBossMailServer1.0M3) as some of the screenshots and stuff are out of date (RC1 stuff really).
If you are ready to start on M4 do that against the HEAD!
Thanks,
Andy