It is rumored that the Leica M9 will be using the same sensor as that on the Canon EOS–5D Mark II. Reportedly, profiles for the M9 are showing up in certains versions of some RAW conversion software, suggesting that the new Leica is almost here. However, it would be quite strange if Canon indeed lends the 5D CMOS sensor to Leica as they’re not known to produce sensors for other camera makers. But then again, we know that Leica sells cameras with a huge premium which may just allow them to offer a good price for the 5D’s imaging sensor. And since the the M9 will be nowhere near the 5D Mark II’s price, there’s little chance it would hurt Canon’s market.
If Leica announces the M9 with a 21–megapixel CMOS sensor, it’s probably from Canon.