Board Thread:Whoniverse Discussion/@comment-24121492-20151110172614

http://www.doctorwhotv.co.uk/series-10-a-closed-off-doctor-new-companion-later-filming-77785.htm

The series is confirmed to be filmed only in April 2016. And, as DWTV said, there's no way they can air everything in 2016 if they start filming so late. 