There is a chance it could be moved around because they aren't officially 'locked into place' 10 days prior to airing but it would still have a rough schedule by now and these magazines indicate that it is certainly 1st September.
|'TV Choice' Scan.|
|'Whats on TV' Scan|
- The BBC America Advert being pulled (Gave a date as 8th September, It could be wrong, or it could be the America's release only)
- There is an available slot which the BBC Are to 'Officially' confirm belongs to Doctor Who on 1st September.
- More than 3 official Television (not pictures) Magazines give the date of Doctor Who as airing 'Next Week' which is 1st September.