Yes I know it would be a fairly pointless buy as a video camera but it has revolutionized many things that are the main drawbacks to dslrs.
1st Full Frame DSLR with 720p/60 video
1st Canon DSLR with recording over 12 minutes
1st Canon camera that uses the WHOLE sensor (much less moire/aliasing)
much improved rolling shutter problem.
First full frame HDSLR with a professional build.
Although it would be pointless to buy only for video, those are all very significant features.
http://www.canonrumors.com/
^Lot of info on there