I see part of my answer addressed on page 7, but I'm not going to read all 7 pages just to be sure I don't repeat...
I'm in the same boat so here's my rationale...
I don't need a 5DII tomorrow. I'd like one yesterday but I can't justify buying 3 year old tech knowing that the new one should be dropping any day. I already missed out on the best price the camera has ever been at so I have little incentive to jump at it right now. I'd like better AF and FPS out of the Mk3, and would prefer a shared sensor with the 1Dx but will let the real announcement decide which camera I will plan for.
I guess to surmise, since I don't NEED a 5D at this moment, I'm not going to make any purchase until we know what the new camera will have, and for how much.