Gearbox has announced that Borderlands 2 will be getting a little bit bigger thanks to an incoming free title update. There will be inventory/backup/storage increases in the update (Free update)," reads a recent forum post from PR man Adam Fletcher. "More ammo SDU's will be available in the black market along with eridium maximums increased." Better late than never, we suppose.
Borderlands 2 will also be getting a new Vault Hunter and a level cap increase in the near future, though the fact that you'll have to pay or buy the Season Pass to obtain the 11 extra character levels is proving to be extremely controversial.