I took one of the hardest decisions (and at the same time, easiest for my wallet) to not upgrade my 5D to a mkII for it's ability to shoot 1080p footage. A brief stroll around the Canon stand at IBC confirmed this decision was right with the technology preview of the 7D encased in impressive cinematic accessories.
While the 5D mkII was capable of shooting beautiful narrow depth of field 1080p video through it's amazing 35mm glass it was slightly limited in the way it went about it as well as being limited to only 30fps, which if you live outside the USA like me, is ever so slightly annoying. The 7D however will add in an 18mp APS-C CMOS sensor that will shoot 1080p at frame rates from 24, 25 and 30 to 50 and 60 in 720p mode while making it far more practical to shoot with.
The 5D mkII has already made waves with it's video capabilities and the 7D will be making those even bigger when it becomes available. RED might have to worry about this camera, especially if they prolong the release of the Scarlet and Epic systems.