As we come closer to the release of Sunbird and Lightning 0.5, we have to increase our testing to make sure that all features landed since 0.3 work the way we all want them to. After the landing of the Google Calendar Provider two weeks ago, we now have iTIP support in Lightning and working hours (back) in the views. If you’ve got a day or an hour free, join the test day in the #calendar-qa irc channel on irc.mozilla.org. We will need every tester we can get.
For dates, times, and details, please go to our wiki page: http://wiki.mozilla.org/Calendar:Current_QA_TestDay
— Calendar QA Team