A short Making Game of Thrones post confirms what we reported a while back: they started running three filming units for the first time this season. The third unit is called Raven, joining the Dragon and Wolf units that have been running the past couple years. Here is a call sheet that they posted as proof:
Winter is Coming: The most complex and intense shooting schedule in television got even more so this year. Let’s hope that all this hard work continues to deliver excellent results.