For quite a while we have made it easy to get snapshots of the latest Prosody source, and also provided a 64-bit Debian package (prosody-dev) that tracks Prosody’s main development branch.
We just completed the last pieces of a new system for building regular nightly builds for each of our active branches. Produced every day at 5AM UTC are builds of a source tarball and Debian/Ubuntu 32-bit and 64-bit packages.
Eventually we plan to extend this system to building for various other platforms (including Windows).
You can find all the builds at http://prosody.im/nightly/.
The Debian packages are automatically uploaded every night to our package repository, and the packages are named according to the branch they are built from. Currently available are: prosody-0.6, prosody-0.7, and prosody-trunk (this last is always following the very latest development code).
The build server is generously donated by Florian Thießen, who also runs a public service running Prosody, thiessen.im.