Yeah only the lower end chipset/boards will feature eDDR3 (or whatever the light DDR3 acronym is).
For now I'm going to sit tight and see what Skylake/Z170 is all about once it releases (and hoping TTL will do both 6600K and 6700K and includes 2500K and 2600K in the comparisons as well, that would be great, and of course try of one or a couple of these ROG boards).
Is there any word on what AIO cooler will fit this socket?
Kaby Lake could have more potential, yeah - unless they focus on the iGPU once again. What are you using 32GB of RAM for?