AMD New Polaris GPU Revisions w/50% Better Perf/Watt (NX delay reason?)

[Akeos]

There is probably more then one raison for delayed...
A another one could be have better production if it is a succès, make anough console for the end of 2017... Not having the problem of Wii without stock...
A rumors speak about 10 millions consoles... for Wii, it was 6 millions...