From DoctorwhoTV:
“Steven Moffat has explained the reason why Series 7 of Doctor Who is moving to Autumn 2012.
“The truth behind the delay next year is: why are we killing ourselves and risking compromising the show, in order to go out in the middle of summer? I’m sick of it. I’m sick of standing in the blazing sunshine, with a barbecue fork in my hand, knowing that Doctor Who is coming on any minute….“Six o’clock on a sunny Saturday is the middle of the afternoon, whereas six o’clock on a winter or autumn Saturday is dark and exciting.””
For more, visit: http://doctorwhotv.co.uk/moffat-explains-series-7-delay-27296.htm