Unlike 0.40 I'm not issuing a feature freeze before 0.50 beta 1. Instead
the feature, non-critical bug, and string freeze will happen in
conjunction with the final beta. The only stipulation being that
features introduced during the beta should not bring in new dependencies
or change the build process - our packagers need this time to finalize
their processes.

0.50 beta 1 is planned for this Sunday June 28th
0.50 beta 2 and freeze is planned for Sunday July 12th
Release candidates will be released weekly as long as there is interest
and blockers to fix until the release, hopefully by August.