As we head into DrupalCon week I've got something big to announce. With the blessing of the Aegir core maintainers, I am taking the 4.x branch of Provision I have been working on and I am separating it from the Aegir Project.
Provision 4 will still power Aegir. We are working on a patch to Hostmaster that will allow us to run a different command other than Drush, allowing Provision4 to become the primary back-end to Aegir 4. This means it will also be able to power the current generation DevShop.