First up, it appears the codename of the new GeForce GPUs is still unknown. According to the site's sources NVIDIA has still not confirmed the codename, it could be GT, TU, or even RT. Furthermore, it's claimed that there are no performance leaks yet because NVIDIA hasn't provided final drivers to their partners. They can't test the cards so the there are no scores to provide to the usual moles.
Take the following with a grain of salt. Some rumors talk about GeForce RTX 2080, RTX 2080 Ti, and even Titan Turing cards. The RTX 2080 could feature something like 3072 CUDA cores, in combination with a 256-bit memory bus and at least 8GB GDDR6 memory. The memory may be clocked at 7000MHz, the same as the Quadro cards. One leak claims the card has a 210W TDP.
We should learn a lot more on August 20th!