IGN carry the news that Gearbox are raising the level cap in Borderlands 2, and adding a new difficulty mode and item tier. There is also a short video showing the latest Vault Hunter murdering bandits - he's a psycho by the name of Krieg. The level cap will be raised to 61, the new mode scales monsters to the highest level in your party and the item tier provides ultra-rare pearlescent gear. That all makes sense, but the prices and distribution are slightly more confusing. The new difficulty mode is free to all but the level cap rise costs $4.99, unless you're a season pass holder in which case it's free. Kriege isn't included in the season pass though and will cost around $10. You can see him below.
The next video only contains a single image but it's far more informative.