Starhawk's Limited Edition isn't the "pay extra for a huge box" variety, it's the "automatic upgrade on first printing" variety, exclusive to GameStop. If you've pre-ordered it from that store already, congrats!

This exclusive version comes with extra DLC, including the "Maw of Despair Outcast Pack" (wow, free despair!) with a co-op map and multiplayer skin, the "Echo Scrapyard Rifter Pack" with a new "Homeworld," and another multiplayer skin. You'll also get a PS3 theme featuring Starhawk concept art, a soundtrack and ... oh yeah, a PSOne Classics copy of Warhawk.

If you were going to get this anyway, and especially if you were going to shopthere anyway, this is a pretty great deal. If not, you still have until May to figure out whether it's worth jumping shop.
http://www.joystiq.com/2012/02/07/st...ree-psone-war/