confirmed on 3dcenter.org
professional Vega maybe dec/jan - similar to GP100 entrance
may 2017 is vega 10 - vega 20 by dec of 2017
so by the time you release vega
Volta professional chip will have been outed by Nvidia at GTC
and you would have consumer volta about 6 months from that with 2.5X the power of Pascal which vega will barely beat
AMD always behind the 8-ball