It's first run is also "special edition" at regular price. Comes with the soundtrack, an extra DVD and I think some other stuff. If you want it, it's paying to be an early adaptor.
I'm not a huge fighting game fan (I still pretty much just play Street fighter 2, just the HD edition now), but this game looks really awesome, and it's very tempting to pick up. Especially looking at the picks of the limited edition.
http://ps3.ign.com/articles/998/998814p1.html
You can find me on facebook as Markus Van Rijn, if you friend me just mention you're from VGchartz and who you are here.