A reader sent me this update on the upcoming Sigma full-frame mirrorless camera with L-mount and 60MP Foveon sensor with X3 1:1:1 technology:
"Mr. Yamaki Kazuto personally wrote to the Slovak Ambassador of the Sigma brand, where he informed him about the progress of work at FF Sigma. According to him, the new FF sensor is assembled, tuned and usable. Now comes the work to build peripheral circuits and build the body. Then a new FF camera will be introduced."
Update on the 60MP Sigma Foveon sensor with X3 1:1:1 technology
An update on the development of the Sigma Foveon sensor with X3 1:1:1 technology
Also: Sigma just released a major firmware update version 4.00 for the Sigma fp camera.