Agree.
Not sure if the 1080 will be a 'good value' but as good or better than the current 980Ti.
The 1070 could be a good value, assuming it is not too cut down. If its close to a 980Ti, that's decent value for <$400. Maybe even close to $350 with a rebate or deal. That's pretty close to where the 970 has been for a while and that has sold quite well.
1070 will be worst x70 card ever.
40% difference in Tflops and 25% in memory bandwidth indicate massive cutdown.
For comparison.
1080 vs 1070-38% Tflops difference 25% memory bandwidth difference
980 vs 970-28% Tflops difference 14% Memory bandwidth difference(970 is 224bit card)
TITANX vs 980TI-9% Tflops difference same memory bandwidth.
6.5Teraflops are either:
2304SP at 1350Mhz Boost- not gonna happend
2048SP(25%less than 1080) at 1.6Ghz-most likely scenario.1070 will be just overcloacked GTX980 nothing more.
1792SP at same clock as GTX1080 at 1.7Ghz