| During this year there were various leaks on many sites about the roadmaps for Intel Xeon, and all of them indicated that Skylake Xeon with AVX-512 (the "Purley" platform) will be introduced some time in 2017, exactly like you have assumed. Besides AVX-512, it is known that those Skylake Xeon processors will have a large number of other improvements, e.g. a new socket with 6 memory channels, possibly the same socket that will be used by Knights Landing. Knights Landing, the first processor with AVX-512, is rumored to have been delayed until Q3 2016, so it will probably be introduced about a half year earlier than Skylake with AVX-512. In conclusion, I hope that Agner will not wait to test Skylake until AVX-512 becomes available, because that will not happen any time soon. From the Intel optimization manual, Skylake does not seem to have any dramatic differences compared to Broadwell & Haswell, unlike the jump between Ivy Bridge & Haswell, or between Nehalem & Sandy Bridge. Nevertheless, a detailed testing might uncover interesting features.
Of the large number of Skylake models already introduced, only one is interesting for myself, Xeon E3-1535M v5, because for servers Broadwell (Xeon D-1540) is a much better option for now.
Xeon E3-1535M v5 will become available in the new models of mobile workstations announced by Lenovo and Dell. I will buy one ASAP, but it seems that those mobile workstations will be offered only in December or maybe even only in January, where I live. I will use Linux on it, and, if by that time Skylake would not be tested yet, I could easily offer remote access to it. Nevertheless, there are still 3 months until then, so maybe another kind soul will provide access to Skylake earlier. | 
Optimization manuals updated new - Agner - 2013-09-04
Optimization manuals updated new - Agner - 2014-02-19
