The 1st DLC which is out right now for Borderlands is going to take you to the zombie island of Dr. Ned. You can pick it up off the Xbox Live marketplace for 800ms points, and you can also get it in the Playstation Network Store.
Tasked with keeping the workers of Jakobs Cove alive, Dr. Ned does his job a little too well, creating flesh eating zombies and other ghastly abominations that now run rampant in this region. Players will have to work alongside Dr. Ned as they embark on an explosive journey to cure the decaying inhabitants of Jakobs Cove in this expansion filled with new formidable enemies, new grueling quests and rare loot drops. “We are very excited to present fans of the highly acclaimed Borderlands with the first expansion,” said Christoph Hartmann, president of 2K. “The Zombie Island of Dr. Ned presents a bold new storyline that entertains and excites, and simultaneously ensures that fans still receive the same great gameplay experience that made the original game a success.”