Skylake is coming up, with rumors pointing to a release at Gamescom in Germany, which is August 5th through August 9th. Beyond seeing the retail packaging, we are beginning to see to companies open up about how their products relate to the new architecture and chipset.
Corsair put up a blog post a few days ago to explain how their memory, water coolers, and power supplies interact with Skylake and Z170. On the PSU side, nothing has changed since Haswell. In terms for memory, DDR3L is supported with Skylake under certain motherboards, but users should look to DDR4.
None of the above should be new information.
What might be new information, though, is that Skylake supports existing LGA-1150 cooler mounts. This means that the Corsair Hydro series of sealed CPU liquid coolers will support Skylake without modification. This is where Corsair's blog stops but, knowing Intel's typical release structure, this likely means that the story will not change for Kaby Lake or Cannonlake, either. These three architectures are expected to use the same socket, which should mean the cooler is the same too.
So your aftermarket cooler should have quite a bit of legs, even with the stock mounts.