Knock on Torchwood.

TV There were rumours of a radio return but it looks like we'll never see a resolution to the end of "Miracle" Day. The Backlot asks the question:

I’d be remiss if I didn’t ask about Torchwood. Every few months there seems to be another story about how we may get more Jack Harkness. What’s happening?

RTD: I know! Bless that show, but I’m afraid not. John Barrowman is busy on Arrow. I can’t believe he’s actually joined a show that’s got his name inserted in the title. [laughs] Just call it Barrowman and be done with it! But I’m afraid no plans at the moment. But anything can happen because it’s a funny old world. But I know what I’m doing for the next two or three years and it doesn’t involve Torchwood. But who knows, the BBC is going in a different direction so who knows. Keep your fingers crossed.

Well, ish. Blames Barrowman for being busy (not that this stopped him ever) and doesn't rule out Torchwood without RTDs involvement exactly, but yes, that looks like it could be it. For now. Possibly.