The 13th Doctor

[The Fury]

Barkley said:

The Fury said:
Did they not 'announce it' by doing the change in an episode? Seems a weird way of doing things. Oh well.

Yeah, I don't know why they always announce it in advance, wish they didn't. Matt Smith & Peter Capaldi were both announced months in advance too. Don't know about David Tennant.

David appeared at the end of the first 'new' series, replacing Christopher Ecclestone, I guess as it wasn't as big back then so they didn't think to announce it but times have changed. David did the work for them making it a world wide success and as we won't see this change for another 6 months... why not announce it before it get's ruined by being leaked.