As Git becomes available as a VCS for Domino Designer (thanks to Nathan T. Freeman for contributing EGit plugin compatible with it), I can start using the same workflow for developing/releasing/hotfixing as I use with Java and Drupal development.
I'm pretty comfortable with gitflow way of doing these tasks, based on this branching model. And there is also git-flow-completion - a perfect companion for it.
If you want to learn more about this approach, do not miss this screencast. Or this one.
Happy coding!