Below is from the canonrumors.com website...
Monday, July 7, 2008, 11:12 AM - Canon 3D & 6D
Canon testing 3 new cameras?
I just received an email about Canon testing 3 new cameras. Two of them will be full frame.
The email talks about new low voltage CMOS sensors in the cameras. The sensors producing the lowest noise currently of any dSLR.
The 3rd sensor is for the 1D line, a 10mp sensor with extremely low noise at 3200-6400 ISO. There was no info as to whether this was APS-H or fullframe.