In general, the roadmap for Version Control API looks like this:
- Make the 6.x-1.x releases suitable for drupal.org, running on CVS only (like it does today). This is important so that improvements get contributed to Version Control API instead of cvs.module, which avoids porting more dozens of newly contributed features.
- Changes that make it possible to run drupal.org on other version control systems will go into a 6.x-2.x branch. That includes user authorization with SSH keys or HTTP(s) and important non-CVS log parsing performance improvements that can be achieved by making the API object-oriented, and stuff that makes distributed version control systems work more nicely with Version Control API.