Witcher 2 Silver Edition?

Is there any difference between the Witcher 2 Enhanced Edition and this new Silver Box edition?  Looking to pick up a copy (I owned the EE before but traded it) and want to know what exactly is different between the two.  Thanks!

I looked it up and there is very little difference. All gameplay is on 1 disc rather than 2, and a bonus disc is included which contains a digital comic and a video.