|Screen grab from trailer|
For the rest of the day the Trailers went back to the generic version, additionally the BBC still have September the 1st scheduling open. What this could mean is that the UK will have the episode a week prior to the US.
So theres a little light at the end of this tunnel with a glimmer of hope that we now know when... But like everything else Doctor Who, its all just a little wibbly wobbly timey wimey right now!