Not that we ever had any doubts, but the BBC just made it official—Doctor Who WILL be back for a sixth season. And Steven Moffat will continue as executive producer of the Time Lord's adventures, writing five of the 13 episodes when Matt Smith returns. (Yes, all those rumors of Smith abandoning the show were false.)
"The last year has been extraordinary," Moffat said about a schedule that had him splitting his time between Doctor Who and his other BBC series, Sherlock. "I've had about four days off, and that includes Christmas day. I work every weekend, I get up early in the morning, I go to bed late at night. There is no way of balancing it."
However, you shouldn't pity Moffat, because—
"It's extraordinary, but it's great fun too! Great fun, so long as it doesn't kill me!"