The centerpiece would be the GeForce RTX 2080 Ti, which reportedly packs the same 11 GB memory (now with faster GDDR6) and 352 bit memory bus as the GTX 1080 Ti, but now with no fewer than 4,352 CUDA cores – that is 21 percent more than the 1080 Ti, and almost as much as in the pro-oriented Quadro RTX 6000. It's hard to say how much faster the RTX 2080 Ti would be if some details are not recorded yet (like the memory clock speed) but hints of a $ 1,000 price suggest that it is specifically aimed at gamers who are willing to pay what is needed to have the fastest machine.
The other cards would not be sloppy. The regular GeForce RTX 2080 would be closer to the Quadro RTX 5000 with 2,944 CUDA cores (versus 3,072) and a 256-bit memory bus, only with a more modest 8 GB of RAM. You may also see some non-RTX graphics cards. There are fewer details for these lower models, but claimed tests of a GeForce GTX 2060 have an average design that outperforms an overclocked GTX 1080 in 3DMark tests. Although there is no guarantee that it is correct, you might just get the kind of speed a flagship card required only two years ago.
The most important questions revolve around price and availability for the larger set-up. Are the prices going up? And will the cards be available soon after their debut, or is NVIDIA announcing things far in advance for the sake of bragging rights? There are signs that it can be a quick launch (possibly already in the same week), but you may not see an RTX on your PC for a while, unless it is relatively affordable and available everywhere.