I'd wait for something better than a founder's edition verision, or just upgrade to 980 TI (or keep it if you got it already).
There was that post about the video comparing 980 Ti with a (supposely overclocked) 1080 that barely did much better over the 980 Ti.
I can certainly say I wont be considering any 1000 model GTX that isn't a Ti (and non founder/reference) edition.
A Ti is coming, further proof on waiting; unfornatly I am tired of waiting for a new system, so I will just be getting a 980 Ti gpu system soon.