The Boost Steering Committee has given the final approval for the conversion from Subversion to Git, including the modularization of Boost library repositories.
The Subversion repository will be closed for all changes to all branches, including the sandbox, Sunday, November 23 2013, 00:00 hours UTC. That's 8 PM Saturday, US East Coast time, and 5 PM US West Coast time.
Please make no svn commits after that time. We will be adding a pre-commit hook that prevents commits, but please do not wait for that becomes active.