Guru 3d is good and I also like digital foundry too. Not sure about tomb raider you may be able to get away without too much aa and still be able to play on mostly high settings.
Metro and cyberpunk will require more horsepower. Although the last metro I played didn't seem to have issues. I can't recall if it was the first one or last light that I finished.
Cyberpunk will definitely make use of the 1080ti and most likely that won't be enough for all maxed settings but it should be close. If you don't end up with a 20 series card you could always get a 1080ti for cheaper.
Even if the 35-45 % increase over my card is true I'll probably get a 2080ti at some point but I know I'll feel kind of crappy spending $1200 for features that I won't use, except for dlss. If you could play at 1440p with rtx on that would be nice but that won't be the case.
But then at least I should be able to max stuff out easily if I stick to 1440p with it so that won't be so bad even though I'd like to do 4k.
I'm going to wait on playing tomb raider until I get one of the new cards. Definitely getting Cyberpunk and resident evil 2 remake when that is out. So I'll hold off on playing any PC games until I have the new Ti, assuming it shows good results. But at least I'll have red dead redemption 2 to occupy my time until that time comes.
Judging by some of the prices of the speculated aib models, they say Asus is planning to sell a 2080ti for $1500?!!
I don't think we will see any cards lower than $1200 as that's the real MSRP thanks to the FE models. If third parties are going to charge so much I may just end up getting a regular model since clocks won't be much different.
https://www.pcgamesn.com/nvidia-rtx-20-series-pros-and-cons
Also, AMD is said to launch the first 7nm cards this year. I'm betting Nvidia will have something too at one point.
https://wccftech.com/amd-confirms-new-7nm-radeon-graphics-cards-launching-in-2018/