In order to address some of the confusion regarding Runebound: Midnight (why the movement is different, why the gold system is different, etc.), we've begun a series of web articles on our home page. The goal is to give some insight into the design decisions as they relate to the game world of Midnight, which is a d20 RPG campaign setting we've been putting out for several years now.
Those articles can be found here: http://www.fantasyflightgames.com/runebounddesignnotes3.html
For more insight into what Midnight itself is all about, check out these links:
Official page - http://www.fantasyflightgames.com/mnland.html
Fan site - http://www.againsttheshadow.org
Thanks, and enjoy!
RPG and Runebound Developer
Fantasy Flight Games