Well, it's almost 7:30 AM in LA (I'm staying in LA for a few months) and there has been no announcements for the new 5D3/X. Nothing on the camera websites I'm following (via Twitter). Nothing here on CR. So, it looks like the announcement will be on Thursday. Don't know why I thought it would be Friday. So a little longer.
My money is on a 5D3 (over a 5D-X). Though, if Canon does choose to call the next version a "5D-X" (10th Anniversary) and give us a "22MP, 6.x FPS, 61-pt AF, 100-51,200 native ISO camera I'll be happy and will be putting in my order later this year for my Xmas gift.