Last week, we posted about the next downloadable content pack for Borderlands. Details of it were leaked thanks to some hints in the game’s 1.31 PC patch. Now, 2K Games has come out and made the official announcement for the DLC. It’s entitled “Claptrap’s New Robot Revolution” and will be released this September on the Xbox Live Marketplace, PlayStation Network and whatever those crazy PC kids use. It will cost 800 Allards on the Xbox Live Marketplace and £6.29 everywhere else.

As expected, the claptrap population has got fed up of being slaves and things have got real interesting. Let by the Ninja Assassin Claptrap, the robots have broken free and have taken to rolling around and re-animating dead people with robot parts to fight for them. You’re tasked with sorting the mess out the only way you know how: with lots of guns.

“A year ago Borderlands was an untested brand that through hard work and a lot of passion, turned out to be one of the best-selling, claptastic and skagtacular games we have ever created,” said Christoph Hartmann, president of 2K. “A year later, we are releasing our fourth DLC instalment, Claptrap’s New Robot Revolution, which illustrates our enthusiasm for creating highly entertaining content that enhances a franchise. In addition to serving as the perfect bookend to the original game, what gamer doesn’t love a kung-fu-wielding Ninja Assassin Claptrap with nunchuck skills?”

Expect 20 new missions, new enemies, some new boss battles, waves of homicidal claptraps, Hyperion soldiers and claptrap-ified creatures. Gamers will be able to earn 10 additional skill points for a grand total of 71 available skill tree points, as well as three more backpack slots.