Gossip Cop reports:
"There are no delays,” we’re assured. “The actors arrive on set in October for rehearsal, hair and make-up tests, etc.” Shooting begins in November, and “this has always been the plan.”
“There may be some confusion because actors have said in interviews that they start in October,” explains our insider. “Prep for the actors starts in October, [but] production has always been scheduled for November.”
This is about what fans predicted, but it is certainly nice to hear it from someone "close to production"
NOw to determine which months are in which locations ;)