A latest magazine scan (not sure which one) sheds some light about the release of Robot Damashii [Side KMF] Sutherland Sieg, where it's mentioned that this figure will be on display at this year's Tokyo Toy Show. That's "again" for the same event. ^^; The release info may be out during the event.
Release date and price TBA.
Tokyo Toy Show 2010 will be held from July 15th till 18th at Tokyo Big Sight. As usual, the first two days are for members of the industry while the last two days are for public viewing.
Image is from Futaba Imageboard.