There is absolutely no reason for NVidia to release a 1080 Ti ATM.
Failed GP102 chips can be used in the Pascal Titan.
There is absolutely no competition from AMD at the high end.
A further cut down GP102 chip released as a 1080 Ti would be pretty useless performance wise and would be struggling to beat a 1080. Worse still it would be very expensive compared to the 1080.
I also think the next Titan based on the full GP102 chip is about 12 months away unless Vega is a lot faster than expected.
Are you aware you repeated what I said, albeit in many more words?