as long as we're speculating...
I expect 2014 will be all about moving the MP count. If Canon produces a superior sensor in 2014 I would expect them to figure out a way to hide its ISO and DR capabillties with the increased pixel density (or even other mfg things) so that the 2014 bodies will not steal any revenue from the 5D3 and 1DX. that means we're not likely to see a 7D2 with better IQ or AF than the 5D3 or with a fps approaching the 1DX. We will see high MP bodies that will see alot of tripod use: If Neuro is right one might be a 6D-like body. I'd expect the other to be a 1 series. But in any case I can't imagine 2014 will see any new FF sports or wedding/event bodies.
When the 5D3 and 1DX have run their revenue course, Canon will introduce sensor tweeks and show another "completely new sensor" which will be an incremental improvement over the 2014 bodies. the 5D4 and 1DX mark II will then set new records for medium pixel count, speed, ISO, DR, AF performance etc in 2015 or 2016.
+1, that is pretty much how I see things also. Actually I am putting money back for the 1DX II right now. Was going to get the 1DX, when the next model was announced but think the 1DX II will be a good birding camera for me. I personally do not see a serious threat to the Mark IV that I have now ( as a birder only ). And do not want a 1DX. But the new 2015-2016 1D series FF will probably be to my liking with higher MP count. Wait and see now. And enjoy shooting with what I have.
For me only! There is nothing out there Canon makes I want ( for birding ). So I am in a holding pattern.