At the start of a cycle, the Release Team will discuss which ISO Testing Weeks we will participate in. Then, during a Community Meeting, members of Xubuntu Team will discuss and then ratify Xubuntu's participation during the cycle.
Along with general testing of our OS, dealt with further in Exploratory Testing and Using Development PPAs, further responsibilities lie with ensuring that:
Sufficient testing takes place during ISO Testing Weeks
Sufficient package testing takes place following calls to testers
Sufficient testing has taken place by Final Release
Bugs reported to our trackers are confirmed, or where unable to confirm, further information is requested from the reporter
Where appropriate, confirmation of bugs can be asked of members of Xubuntu Team in the team devel IRC channel
Members of the QA team might find it useful subscribing to the Xubuntu Bugs team in order to be aware of bugs being reported by users.