Yeah, but you've got a super high end rig. I'm still on a GTX 680, and I'm content to put off upgrading for as long as possible.
If the port is decent, your GPU is more than capable.
I upgraded to a 970 4 months ago when I decided to push building a gaming PC into 2016, waiting for Skylake's enthusiast parts. Prior to the 970, I had the 7950 which measures ~ up to your 680 and I game @1440p. If you are at 1080p, minimal compromises will let you hang onto that 680 a while longer.
I want to be hyped but I'm still remembering the tiny 2 week gap between previous delay announcements and their announced launch dates.
I'm not complaining about delays, CDPR handles their much better, people were fainting on many forums but both Witcher delays were announced several month before respective launch dates, I wasn't happy but at least they didn't wait until two weeks before the announced launch date to tell everyone about another delay. However this is R* and they don't care.
They sold 45 mil copies, of which 10 was next gen. The game should sell 5 millions quickly to help them break 50 mil but the game is 2 years old and 2 gens of consoles have exposed the game to many that otherwise may have played on the PC. Only the hardcore PC guys like some of us here actually didn't sin and abstained. Even fewer among these few are ones that love the franchise.