From George Baker on Twitter, a short filming clip with some pretty
clear audio of the Doctor offering to use his TARDIS to help Bill with
her belongings into her (I believe) sorority house. This is the same
house from the episode, Blink (S03E10 with the Tenth Doctor) from
2007, so it explains why Twelve pauses and stares at it in shock. Since Steven
Moffat wrote that episode, this might be one about coming around full
circle and explaining more of the home’s history.
Bill is at university! I wonder what she’s studying