Wild rumors: Nikon to launch a complete new system based on the Sony 50MP medium format sensor!

This is really a wild rumor but I got it via some trusted source. He says that he “heard” about a new Nikon camera system that could be launched at Photokina. And the first camera will feature the current Sony 50MP medium format sensor used by all newest generation Hasselblad, Phase one and Pentax MF cameras!