Google Code goes distributed with Mercurial
Google has announced that projects hosted on Google Code will be able use the Mercurial distributed version control system. Google Code had previously only allowed the use of Subversion. The Mercurial support is currently available only as a preview release for invited users. Mercurial, which was recently adopted by the Python developers, was selected after detailed analysis pointed to an easier learning curve, between windows support and more robust retention of history.
The Google implementation of Mercurial uses the BigTable distributed storage system, which will allows for greater scalability. Google Code users who want an invitation to test the new Mercurial system can request an invitation and documentation has been published on how to convert from Subversion to Mercurial. Google also publish a page tracking the Mercurial support status.