I wish to get gtx 2070 or gtx 2080 too 
But I think it wouldn't be available in 2017, maybe in the first quarter of 2018.
But I think it wouldn't be available in 2017, maybe in the first quarter of 2018.
The current NVidia roadmap as I recall is saying "1H 2018" for their 10xx refresh (might be 20xx but I'd bet more likely 11xx series nomenclature).