Borderlands 2 will feature four pieces of campaign DLC which will be available individually or via a season pass, 2K Games and Gearbox Software announced today.

The DLC will each feature several hours of gameplay and introduce new adventures, allies, enemies and environments.

Local retail prices have not been confirmed, however as a guide the expansions will retail for US$9.99 on PS3 and PC, or 800 Microsoft Points on Xbox 360.

The season pass will go for US$29.99 on PS3 and PC, or 2400 Microsoft Points on Xbox 360.

All four add-on content campaigns are scheduled to be available by June 2013.

Borderlands 2 is out on September 21.