1Ds Mark IV February/March? Apparently the 1Ds Mark IV is in testing and is said to be “production ready”. The following are some of the rumored key features. 32MP via Canon Rumors: http://www.canonrumors.com/2010/01/1ds-mark-iv/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+canonrumors%2Frss+%28Canon+Rumors%29 Apparently the 1Ds Mark IV is in testing and is said to be “production ready”.