what are the major differences between force unleashed and the Sith edition?

The Sith Edition has all the DLC in it already (you would have to buy them if you wanted them with the regular edition) one new level you can't buy any place else, a collectors card and a tin case..

ok thanks

Does it come with the tin case? I thgouht they dropped that.

It's a SteelBook. And it looks really cool.