I long asked Sigma to make a DP series with interchangeable lens mount. And someone in China listened to me :)
Over at Taobab (translation here) they are selling modified Sigma DP cameras with an M-mount!!! You have to send in your Sigma DP camera and for1880.00 Yuan ($300 or 230 Euro) they will add you the M-mount. And they plan to add more mounts in future! Sounds great! Will let you know if some of these cameras hit on eBay. Meantime...meditate Sigma..meditate... and give us a serious mirrorless and interchangeable system with an excellent new generation of foveon sensors!
More info at X-3club (google translation). Click on the images below to see a larger version: