The final piece of Borderlands 2 DLC was released today. It's Headhunter 5: Sir Hammerlock Versus the Son of Crawmerax. It can be yours for $2.99 (USD).
Join Sir Hammerlock along with Brick, Mordecai, and Lilith for a relaxing vacation on Wam Bam Island as you play the biggest Headhunter add-on in the series. At the end of your adventure, you will battle a foe that may look familiar – Crawmerax Jr., the son of the great crab worm from The Secret Armory of General Knoxx add-on from the original Borderlands.
(via 2K Blog)