I ended up spending a large part of last week fixing some architectural problems I created with the ProjectVCS/VCS classes and debugging some test cases, but overall the admin page for selecting a project's current VCS and initializing a repository is ready (announcement coming soon asking for beta testers).
Other tasks last week included fixing the Drupal spam module so it notifies the project owner rather than Mozdev admins and cleaning up the change password form to reduce the number of warnings. This week I plan on getting logging of Mercurial commits into our VCS database log and figuring out how to best publish the new settings for projects that use a different VCS.