Well, when I say exclusive, I’ve just posted this to Outpost Gallifrey, so every Internet-savvy fan will probably know within 24 hours!
I was having a look at The Agency website, which has the agents for writers including Russell T Davies, Paul Abbott and many others. It lists their current projects, and according to the site, Tom MacRae and Helen Raynor are writing for series 4 of Doctor Who, which I haven’t seen announced anywhere else.
Helen Raynor wrote this series’ Dalek story, which I loved, and Tom MacRae wrote the first Cyberman story of the new series last year, which I enjoyed but felt could have made its villain John Lumic more interesting.