While we have two sets of people in the community that we contact about required testing, Testers will get regular contact from us, but we should only, in general, call on Users at later stages.
The QA Lead will be an administrator on the Testers Launchpad page and can contact those users via LP. Copies of testing calls sent to the devel mailing list should go to this group each time.
Any member of the QA team can:
Mail the devel list with a testing call
Just prior to an upcoming ISO testing week call, warn on the devel list
Make an ISO testing week call
Xubuntu Users will be contacted for ISO testing at the Final Beta ISO Milestone.