all of you who are trashing this polaris 'refresh' and the fact that amd decided to still call them 570/580 seem to forget what it really indicates: even vega 11 will be significantly faster (i.e. at least a category higher), than the 580
Why not start Polaris at 570 then? It feels like a better upgrade and lets small Vega slot in at 580/590 levels and big Vega as a Fury replacement.
Of course who knows what the naming scheme will be after their announcement regarding Vega naming.
As a few others have pointed out with a good 480 you can already hit the rumored speeds for the 580. The 8-pin power connector is good in that it will allow for more OC headroom, but the chip itself also needs to be capable.