Soldato
Yes, AMD are releasing an entirely new architecture called Navi some time this year. It's going to be a mid-range product though based on everything that's been said, perhaps offering Vega 64-ish performance with much lower power draw and at 1660 Ti-esque pricing. Which sounds like what you're after, but it's all still entirely rumours and speculation at this point.
I'd add to that don't expect anything before September, just to add some kind of pie-in-the-sky timeframe to it for those looking to hold out on a GPU purchase.