What is the estimated timeline for these being available? The 5k retina iMac is out nearly a year (October 2014) and there is no 5k (as in 5120x2880) support for any version of Windows I can find. 4k is available, but that is not the correct monitor resolution.
AMD, what's going on? It's almost Christmas 2015, and we still don't have a 5K driver for Windows 10 on the iMac.