Here are some places where you can look for information about Statistical Methods for Manifold-valued Data:

Homepage
Statistical Methods for Manifold-valued Data has a homepage that can be found at http://www.nitrc.org/projects/smmd/
Trackers
  1. Bugs: Bug Tracking System
  2. Support: Tech Support Tracking System
  3. Patches: Patch Tracking System
  4. Feature Requests: Feature Request Tracking System
Wiki
Statistical Methods for Manifold-valued Data has a wiki that can be found here.