The DLC does a number of things that will greatly expand and extend your gaming experience such as raising the level cap from 61 to 69, adding new talent points, new boss fights, more storage in your bags, and all new loot.
Sadly not available in Germany and Japan, Xbox 360 users can download the update via their Xbox 360 Dashboard, or add it to your download queue by clicking this link.
The new DLC will cost 800 Microsoft Points and for those of you who don’t know, you will still need the original copy of Borderlands to enjoy this DLC. We have also posted the dashboard text below for your pleasure.
To combat second hand sales of used munitions among greedy, haggling treasure hunters on Pandora, the Hyperion Corporation have decided to activate the Interplanetary Ninja Assassin Claptrap. Instead, it has organized all of the claptraps into a revolution, and they’ve been assimilating all life on Pandora and converting them into claptraps. With our heroes caught in the middle, they must stop the Interplanetary Ninja Assassin Claptrap in order to release his control over all of Pandora’s claptraps and collect their reward, of course.
Source: Major Nelson