I was shopping on Amazon and BL2 (Physical) was on sale for US$20. Then I saw a Game of the Year edition that I could choose. Check out the screenshot:
http://i.imgur.com/aCNRRcr.png
Edit: Found an article confirming this.
It's releasing on all platforms on 8th of October for North America and on the 11th of October internationally.
http://www.tomsguide.com/us/borderla...ews-17458.html