Gearbox has announced that Borderlands 2 is receiving a "Game of the Year Edition" this October. This complete version of the game contains the base game and just about everything that's been added to it since release. According to various retailers, the list price for this edition is $30.
Here are the full contents of the new edition:
Borderlands 2 Main Game
Captain Scarlett and her Pirate’s Booty
Mr. Torgue’s Campaign of Carnage
Sir Hammerlock’s Big Game Hunt
Tiny Tina’s Assault on Dragon Keep
Creature Slaughter Dome
Gaige, the Mechromancer Character Class
Gearbox Gun Pack
Vault Hunter's Relic
Krieg, the Psycho Character Class
Collector’s Edition Heads and Skins
Ultimate Vault Hunter Upgrade Pack 1.