I don't know what to think. AMD is sure holding their cards(no pun intended) close to their chest on this one. So far it's looking they're going to get a major beat down. If the GTX 1070 turns out to be as good and as cheap as it's supposed to be. Then AMD better be holding 5 aces. Because they're going to be screwed BIG TIME otherwise. Nobody in their right mind is going to buy the new batch of AMD cards unless they seriously kick ass and are priced seriously competitively. Not even me. As much as it pains me to say it. Because so far as I can tell these new AMD cards are going to be relatively weak. And almost certainly nowhere near Fury. But like I said, they could be keeping their secrets held tight for now. And maybe for good reason. It'd sure be a huge slap in Nvidia's face if they go all in(like they apparently are). And then, right as they think they've got it won, AMD pulls a platinum diamond encrusted rabbit out of their ass. Frankly it doesn't seem like a very likely scenario. But one never knows. It ain't over 'til...
Of course they wont be close to fury, these are lower-to-mid range cards, around the 390 level. Vega in 2017 is furys replacement. AMD is keeping quiet because either
A.) polaris is far better than pascal, with a huge advantage in that tiny die, perhaps it is more power efficient or scales better. AMD knows this, knows that they can match nvidias performance at a lower price, and can make a hefty profit while nvidia will have to cut prices across the board to keep up, a reversal of what happened with the 300 series. They keep this news secret until just before pascal's launch, then reveal Polaris, and ruin nvidia's launch day sales.
B.) Polaris is weaker than AMD expected. They have gone on about power efficiency, but now about performance much, suggesting polaris isnt the smash hit they expected. They are keeping mum until they can figure something out marketing wise to sell polaris.
My guess is A.) is more likely. Polaris is an enhanced GCN design, and has a smaller die than nvidia, much like evergreen vs fermi. And polaris is the first major project that lisa su has been CEO for a majority of, so this could be the fruits of AMD's labor. If AMD can pull a $300 card, with the rumored 390/390x performance at ~130 watt TDP, AMD would be in a pretty good spot.