after selling all my D810 D800E stuff,I was about to buy a Sony A99v or another 6D, but decided to wait a few more weeks.
I love my 6D but I would prefer to get its successor if Canon is about to announce it.
I am also very curious about the a99v successor with the new A77ii type of super AF(I consider it the best AF in the game right now).
I hope the 6D mk2 gets feature set of below:
1 about 28mp ff sensor with one full stop better DR at base ISO.
2 a good EVF maybe one in the A7R or better.
3 touch screen UI in addition to current UI mechanical UI of the 6D.
4 lighter than the 70D.
5 dual SD slots with new UHS-2 support.
6 better improved video with 4k at 60P support , headphone jack,etc.
7 ic voice recorder for interview works with clients.
8 -5 EV center AF sensitivity.
I think the A99v is the current best all around FF camera, but if there is its successor around the corner, I will wait for it.
I know some narrow minded people (mostly sports and wedding pros and old guys with some film experience) never accept anything other than Full sized huge cameras like D800 , 5D with mirror, and condescendingly tell others how unseriously you might be taken if you are not shooting on a huge D-SLR with the dated OVF tech, but any rational people see the OVF is quickly becoming a thing of the last century thing, I think after shooting a Sony A7R or A99 kind of cameras for a month or longer , there is no way going back to the film era finder system.
Further more , the PDAF is dated, it is not accurate enough for high resolution sensor, thus for high resolution work the A7R is the better camera than the over hyped flawed camera like the D810 /D800E with left AF and white dots thermal noise issue.
The CDAF with some kind of subject distance detection system is the future, and it is much more accurate than the best PDAF on mirror from Nikon , Canon or Pentax.
The CDAF system does not need AF fine tune or MAFA.
I think anyone just hate EVF and mirrorless AF should try out the A7s a month or even better the Panasonic GH4, the AF of the GH4 is much better than anything from Canon Nikon for almost everything, maybe except for sports. The A7S and GH4 can AF even in -4EV light level, the D810 and the 5D3 AF reliably in -1 EV light level, nothing close to the A7s.
So if Canon wants to stay at the top in this game, Canon must invent some sort of new AF /EVF tech and needs to actually introduce it in a new body(very soon), not just patenting it or announcing development of new type of AF tech or sensor tech(but has to show it to us)