The Sprint extension is a tool that replaces Scrumbugz. History of development is here: T153: Burndown charts for Phabricator projects
It is in a relatively good state now, but still will be developed by CI.
We would like a process where we can regularly stage in labs and then deploy in production. The basic puppet module changes have already been made.
Each release will need a new puppet role manifest change followed by the phab_update_tag script run.
We are looking at pushing our latest release tag to labs as soon as possible in preparation for a production deployment in about one month.