I’ve been thinking for a while about the in-universe year of these specials. Not that they’re actually paying attention to this in the production office, but… The casting call for Rose said she was 15. Donna left the Doctor in mid-2009 (given the year ahead thing), so the earliest her marriage to Shaun in “The End of Time” could take place is Spring 2010. For Rose to be 15 (and if she’s Donna and Shaun’s biological child), the setting for the new specials would have to be 2025 or later. But I’m sure they’re just running with the year of broadcast.