The CC versions of the Adobe DVA's don't have an "approved" list anymore, so they've not been adding anything to that CS6-era information. They are designed to work more also with AMD/Radeon cards than in the past. So ... it will *work* with your 980 though some of the newest cards do have things that the DVA's don't fully utilize yet. I don't recall if the 980 has some of the newest v-card whizbang circuits but I'm thinking it might. Over on the Hardware Forum you'd get a more detailed response though someone else with more specific knowledge of that card might post here.
Moving to the Hardware forum.
Yes Premiere CC 2014 works fine with the 980GTX.
You are right, it does work ! thanks