Today is the big reveal date. However there have been a lot of details leaked. Much more than before the release of the 10XX GPUs.
Supposedly these are the specs of the next generation Nvidia consumer gaming GPUs. Supposedly, all of them are 30-50% faster than the previous generation of the same series.
The interesting thing to me is that if the GTX 2050 ti is 30-50% faster than the current version, that means current GTX 1060 performance in a $150 MSRP price point. That really lowers the entry price of 1080p gaming with high graphics settings. Also the RTX 2080 ti should be able to handle 4k 60 FPS in some of the most demanding games now.
Also, what will AMD's response be? Tests of the Vega 64 vs the GTX 1080 already shows that the GTX 1080 is 5-8% faster than the Vega 64 across a wide variety of games when both are both stock or overclocked. All the info from AMD says they won't be releasing any new consumer/gaming GPUs until 2019. Some info says that the next generation of AMD consumer/gaming GPUs will just be a die shrink others says it will be a new architecture and a die shrink.