This is getting annoying, its not coming out till next year. There is not a chance that it'll be coming Nov 3rd... what will be coming is the video cameras. Other than the fact that it's been said people are doing test footage for these cameras, RED is also having announcement on that day to match Canon's announcement. Why the **** would RED care about a DSLR being released? If they did care they would have announced something when Canon announced the 1DX.
Don't get me wrong I want a 5D3 as bad as the next person but it won't happen. 1DX will carry us into next year... the 5D3 will be announced sometime before or after the 1DX gets released.
1DX- carry us into 2012
5D3- carry us into photokina
7D2- carry us into 2013
And even if there was a slight chance it dose get announced it won't be released until well after the 1DX, so either way were not getting the camera next year around this time.
Also the biggest thing that people forget is the fact that these cameras are for photographers. I get that people all over Hollywood use the 5D2 but when it comes down to it this camera is for the photographers, so when Canon announces the 5D3 it'll be at a photographer event (hence Photokina).
Due to this interest in video cameras from the 5D2 its obvious that Canon is now putting their hand in the game to shake things up (hence the Historic announcement on their part). It will also explain why its in Hollywood to show that this camera is specifically for the serious filmmaker in the industry. And like I mentioned before, if it wasn't that big of a deal then RED would not be making their announcement on their video camera if it wasn't something video related.