It appears that the rumors were true. So far each and every custom GTX 1070 Ti model we heard about comes with the same clock speed of 1607 and 1683 MHz (base and boost respectively).

Two AICs we spoke with also confirm 2432 CUDA core count for GTX 1070 Ti.

Below you can find first pictures of GTX 1070 Ti EX by KFA2 and its packaging, which clearly confirm the new model.

The packaging also confirms 6+8-pin power connectors and 8GB GDDR5 (not GDDR5X) memory configuration.