Sony has detailed the US pre-order incentives it previously announced for Starhawk, which it said contains over $20 worth of extra goodies through GameStop. You already know if you drop some money down you’ll receive the following: Maw of Despair Outcast Co-op Map and Shade Warrior Multiplayer Skin, Echo Scrapyard Rifter Pack with Scrapyard Homeworld and Huxley Ardin MP Skin; Starhawk Concept Art PS3 Theme; the game soundtrack and a copy of the original Warhawk released on PSone through PSN. However, it appears you will now also receive one free month of PS Plus. Even better news, right? Head on over to the US PS Blog to have your first look at the extra content, or head below the break for a video of it. Don’t forget, if you were a beta tester, you will also be handed a couple extra gifts for your testing time. Game hits the US on May 8 and Europe on May 9.