Hopefully they launch the 24-70 with the 5DIII. I doubt it could be a kit lens with the 5DIII as the package would be expensive. I would expect the new 24-70 to be $2500 or higher given the trend of Canon and Nikon's huge price increases for any new revision. Camera equipment price increases over the past decade have far exceeded inflation, wage growth, and even college tuition.
Makes sense to me to launch them together and ofc (hopefully) a 35 f/1.4 L (this is the lens I'm really interested in) :-P. I think that new 24-70 will surely be above 2k. And, sadly, new 35 around 1800 or something like that.