Apparently, John Barrowman has been chatting (but we don't know exactly who to!) and the Metro newspaper has picked up the story commenting:
"Actor John Barrowman has been chatting about his return to Doctor Who and has admitted he can't wait to play a "sassier" Captain Jack.
The star of the sci-fi show's spin-off Torchwood is due to start filming the final three episodes of the third series of the show."
This - sorta - confirms reports that John returns full time to the series in early February (after his panto run ends this Saturday) and it further suggests that John will, indeed, be back for not only the finale episodes, but "Utopia" too. More news as we get it.
If you want to read the full report, which includes a list of other high profile guest stars who've appeared in New Who over the last three years, then click here.
Sassy Captain Jack - I can't wait!