I just watched it. WOW! That was such a great episode. I think the next few weeks we are going to have a trip to all the times the Doctor had a chance to kill the daleks.
The references to the superb Genesis of the daleks is the reason why i think that. And i also think i am correct in thinking his Granddaughter is coming back also.
I really like steven moffat he iis such a great writer and i am really looking forward to the next 11 weeks.