I think we could see some shifts. Before kepler nvidia's power consumption was epic. I don't think people realize what nvidia had to do to get to kepler and have launch advantages over AMD. If they are pushing pascal as a compute GPU, they might be reversing some of those cuts and that could mean pascal will be a power hungry chip at least. Like someone said before, overclocking could take a dive etc.
http://www.anandtech.com/show/5699/nvidia-geforce-gtx-680-review/3
If they keep their software scheduler they can probably stay ahead of AMD on performance when asynchronous compute is out of use. That might be the most important. The gains on efficiency they get from investing in drivers is their biggest advantage and things point to that possibly going away next year. AMD ended up ahead sooner or later against kepler and probably most of the maxwell 2 cards, but next year might be the first time in a while they have a generational lead (no new GPU from nvidia on the same architecture wins). Mostly because they have the experience on HBM, dx12 like APIs and of making these full chips while fighting for efficiency. Nvidia dropped that fight with kepler and might pick it up, years later, in 2016.
This might not matter to nvidia though. A minor loss in consumer graphics won't matter if they sell more GPUs at higher prices to professionals.