Much better performance in high ISO say up to 6400 (improvements in RAW files not JPG only). 10fps. Even better Autofocus. Silent shooting would be nice too.
I believe these improvements would be enough to make it a killer APS-C camera. In fact I would get this instead of a bigger telephoto! And of course we can all dream
P.S Price around 1.8K tops
Uh the original was $1699.00 when released. You actually expect them to only add $100 to the price? This is how we get people going thermonuclear when the product ends up being ridiculously expensive in people's minds. Have realistic expectations and then it's not as big a shock when the price comes out. I could see them pricing this the same as the 6D at $2100. Then you have the choice of better AF and body construction or a Full frame with Higher ISO sensitivity. BTW my 5D mark ii is only marginal at 6400 so I wouldn't expect 6400 to be super useful on a crop body. I think if they're smart they might work on something that they have more control over say DR and an increase in MP possibly.