They're hinting that CIN has the Doctor dealing with "Unfinished business"
I kind of wonder if he actually does destroy the Daleks before their creation, hence RTD's word about giving the Daleks a break. Maybe this will cause some weird ripple effects through time (The Doctor of course will retain his knowledge of his encounters with them, as it's been brought up several times he remembers altered timelines) that will be a plot plot in the specials or season 14. Just a theory really.
However it's a bit of an odd thing to show off in a charity special of all things, although Tennant's first performance of the Doctor post-regeneration as the tenth was likewise a CIN thing.