The key term here is obviously "revolutionary." I think the comment that, to Canon, "It's seem like it can be anything..." is right on the money. I have little doubt that they would apply that term to anything you all have mentioned (new AF, swivel screen, etc.).
For me however, I think the there's only really a couple of things Canon can do to truly match the revolutionary nature of the 5D2. Whether it's in a DSLR or EVIL body will be interesting to see, but:
1. Raw Video and/or non-line-skipping CMOS acquisition
2. Full 1080 HD output (even during record) from HDMI port
3. Slow-mo (60fps or higher) on a full frame camera
If they come with one or more of these features the industry could really get turned on it's head. Anything less than that is progress, but not revolutionary.
Do we think Canon has any of that coming within the month? I tend to think, not so soon. Maybe we get #2 and #3 on a 5D3, but not till mid/late 2011. #1 I'm not holding my breath.