Here is the latest release candidate for M4: http://people.apache.org/~rhs/qpid-M4-RC6/
Work is starting to get held up on trunk, so I'd like to encourage people to review and vote as soon as possible. If there are no major issues noted then I'll create a branch and open up the trunk early tomorrow afternoon. After that point fixes for the M4 release will be kept to an absolute minimum, so please speak up sooner rather than later if you spot any issues.
--Rafael
