Apparently Canon are announcing details of new cameras on Thursday 26 August. Sony and Nikon have also revealed details of their new cameras over the last week so will Canon announce a Canon 5D Mark III to replace the Canon 5D Mark 2?
How could Canon improve the 5D Mark II? A tilting screen as suggested for the Canon 60D rumours could be one possibility. For video I think the ability to shoot 720p video as well as 1080p would be great as often the highest resolution isn't needed. The ability to crop image for video as per the Canon 550D would also be good.
The original Canon 5D was announced in August 2005, will Canon announce its successor 5 years on?
http://www.canonrumors.com/category/photography/canon-60d/