It will most probably be called GeForce 2070 Ti and I guess Nvidia will only release it if there's competition from next gen AMD cards in the performance segment from GeForce 2070 to 2080. I think that Nvidia will release the 2080 and 2070 cards first just like they did with the previous generation (Pascal). Then most probably the 2060, 2050 and 2050 Ti cards will follow and finally the most powerful consumer card of the new generation (Volta) - the GeForce 2080 Ti.