The Canon 5D Mk 3 has been announced, and many of you are pre-ordering (just like I pre-ordered a 1Dx). Google it: the details are all over the web.
Yes, nice, and I note that in particular the focus system has received a major update.
But let me caution you, and point to an opportunity.
The 5D MkII is very good also – yes, older focus system, true, but since we usually just use one focus spot, and we seldom shoot at f/1.2, that is not an issue. The camera is not the picture – the lens determines the picture quality much more than the camera, and the photographer does so even more.
So instead of putting down $3,500 for a camera, how about instead buying a good used (or even new, discounted!) 5D MkII? These will be available in droves as everyone upgrades.
So unless you truly need the new camera, I advise it might be wise to save your money and use the difference to buy a fast “L”-lens, and some pro training. Better pictures will result.