Described as "the first in a series" of add-ons, The Zombie Island of Dr. Ned will run you $10 on all three platforms. Here's a brief description of what's in there.
Tasked with keeping the workers of Jakobs Cove alive, Dr. Ned (who is not related to Dr. Zed from Fyrestone) does his job a little too well, creating zombies and other abominations that now run rampant in this region. Players will have to work alongside Dr. Ned as they embark on a quest to cure the inhabitants of Jakobs Cove in this full-fledged expansion filled with new enemies, new quests and rare loot drops.
More importantly, here's what it looks like.
The real question, of course, is exactly how much content and how big a landmass this pack entails. Jeff's closing in on the level cap in Borderlands right next to me, so we'll have a full review of the shipping game next week, and you can look for this DLC pack to hit "later this year."