Japanese magazine Hobby Japan have revealed that Kotobukiya is preparing a Sanjuro model for release in 2013. As the name implies this kit will be based on the Medarot DS Kuwagata (KWG) robot Sanjuro. A more defined release date, and pricing information were not shared. Previously Kotobukiya released model kits based off of KBT models Gun-Nose, and Metabee. Here’s an image of the Sanjuro prototype:

Thanks Kimbles!