I note Contax are using a 36x24 mm 6.29Mp CCD in their new Contax N SLR camera.
Perhaps there is hope for cheap/hi-res 36x24 CCD's in the future - so us
lowly 35mm SLR'ers can happily go digital after all.. :-)
http://www.contaxcameras.com/nseries_press/index_nd.html
mt