Speaking at the British Comedy Awards, the comic confirmed that the next three episodes would be full of "all sorts of unpleasant things" and that the show would air "early next year".
"Like the last series we've done three stories that are three different genres," said Brooker.
"Last year we had a political thriller to do with pig f**king, and we have an Orwellian nightmare and a kitchen sink drama."
Spilling details on the second series, he said: "This time we have a story that is... it's a 'what if' scenario. What if, you died and your Twitter feed and Facebook statuses carried on going. What if there was some software that emulated what your personality was like.
"We've also got all sorts of unpleasant things and also one of them is very sad. That's a new thing."
Brooker will have a busy 2013 as he also has a new weekly Wipe series coming on the BBC and two more series of his Sky1 spoof comedy A Touch of Cloth.
Watch the trailer for the first series of Black Mirror: