The quick version: $30 season pass for $40 of content. Four campaign add-ons will be included, and will otherwise be priced at $10 each. All four campaigns should be released by June 2013. The free pre-order DLC content (Mechromancer and Slaughter Dome) is NOT part of the the season pass.
Now that Borderlands 2 has gone gold and we've shifted our efforts to post-launch support of the game, we have some exciting news to share about our plans for add-on content.
After the release of the game, four brand new add-on campaigns for Borderlands 2 are coming your way, featuring new areas to explore, new adventures to undertake, new enemies to overcome and more. Priced individually at 800 Microsoft Points for Xbox 360 and $9.99 on PC and PlayStation 3, these four campaign add-ons are scheduled to hit by June 2013 with more details to come in the future.
Soon we'll be offering a "Season Pass" bundle that includes all four campaign add-on packs for 2400 Microsoft Points on Xbox 360 and $29.99 on PC and PlayStation Network -- a savings of 25% over buying each campaign add-on individually. The Borderlands 2 Season Pass will be available through Steam, PlayStation Network and Xbox Live and will also be available at GameStop.
NOTE: The Borderlands 2 Premiere Club and other pre-order items are not included in the Borderlands 2 Season Pass.
And here are some official answers to fan questions:
Why isn't Mechromancer included?
Mechromancer isn't included in Season Pass because a) the Mechromancer is a new character class, not a full-fledged add-on campaign like the rest of the Season Pass content and B) Mechromancer comes free with a pre-order from a Premiere Club retailer so we didn't want fans to pay for something they may already have. For those that don't get her free with a pre-order, the Mechromancer will be available for individual purchase the same time she's made available to Premiere Club members.
Why such a long development window?
The exact specifics of what will be released when is still being worked out and dependent on the development process, but the plan is to have the last one out by June 2013.
There are roughly 10 months between Borderlands 2 entering certification and the beginning of June 2013.
To give you some context, with the first Borderlands, the Zombie Island, Mad Moxxi and General Knoxx DLCs were all developed and available within roughly 4 months of launch. For Borderlands 2, June 2013 is around 8 months after launch.
Also, they're not all releasing at the same time. They will be released as they're finished, with the plan to have the last of the four done and out the door by June 2013.
If you do a 5th DLC campaign, will you alter the season pass and include it anyway?
Right now, the plan is to develop four campaign add-ons.
Once those are complete, the development team will likely take a break to catch their breath and consider what to do next -- but until we're at that point, I really can't say.