previously reported that Canon’s next-generation 5D DSLR could be launching in February 28th. But it's already 29th February and still it hasn't released to market yet. So it’s obvious that those rumors did not pan out. Today we got a reliable evidence of release date of March 2nd for Canon 5D MK III. That's the invitation card Canon is sending out the various media, indicating that an event will be taking place on the 2nd of March. While it did not specifically mention the launch of the 5D MK III, the 2nd of March date seems to be in line with earlier rumors of a March launch.
Source : www.canonrumors.com