I don't think Mark II will have 45AF from (or improved) the previous 1D. More like a highly improved 19AF system, they still need to milk as much money as possible like all other companies.
18MP sounds reasonable, perhaps 21, definitely APS-C. I mean why would they switch the sensor already in the second version.
8 - 10fps is just amazing, I couldn't ask for more in this price range. Its ISO performance is fine at 3200, especially at concerts and sports, though sometimes it's a bit too noisy. One stop improvement would be really nice!
I don't think Canon will announce any speed monster before Olympics, 1DX should have its glory for a long time.
Photokina would be the best place to announce it, along with a 650D and 5D Mark II some time before that.