After some work on Convergence I've come back to Gigapult with some new ideas. I've forked a ruby-only (without JRuby support) branch for it and found that the remote deployment of services and spaces is a tricky task.
As a result, I decided to simplify the configuration DSL and make Gigapult available as a ruby gem. These changes will be uncompatible with 0.3.* branch, but 0.3.* still will be supported (I'll add some extra documentation and maybe some screencasts showing what 0.3.* can do).
0.4.0 release will be available on 2008/03/28. Stay turned.