Exciting news about the PC edition of Borderlands 2 today: We're shipping with Steamworks!
This means that when Borderlands 2 is released -- September 18th, 2012 in North America and September 21st, 2012 internationally -- all copies of the PC version will utilize Steamworks features like multiplayer matchmaking, Steam Cloud support, Steam Achievements, auto-updating and more. So even if you purchase your copy of Borderlands 2 PC at retail, you'll still be able to add it to your Steam Library and enjoy the benefits of Steamworks!
Don't forget that you can get awesome in-game bonuses by pre-ordering Borderlands 2 from a participating retailer. For more information on that, visit borderlands2.com/preorder