At the moment, nobody has an idea of what to expect. It's been awfully quiet about AMD's and NVIDIA's next-gen GPUs. In the past, there were frequent leaks but these days there appear to be fewer and fewer moles. As such, we have no idea whether the next-gen mainstream GPU is a Pascal Refresh, Volta, Ampere, or perhaps Turing.
The presentation will take place in August (20th to be exact), which means NVIDIA could launch new architecture/GeForce 20 series before that date. That’s 81 days from now.Recent rumors suggest NVIDIA will roll out its next GeForce series in Q3 2018, at least some of these parts are said to use the new GDDR6 memory.