The GFS has been consistent to itself and rather than get everyone’s hopes up, it will likely be used for forecasts. That is still a lot of snow, more than what the last storm produced for most locations. I would say keep in mind the potential is there for much higher amounts. It will come down to the storm track, the storm is going to last into Tuesday, so don’t judge the storm until after then.
Here is the new GFS. The NWS said in their discussion 8-20″. They anticipate those higher amounts around DWest, Rafter, Shenandoah and Forest Lakes, Enchanted Forest and Pagosa. They seem to have discounted some of the other model runs. I still expect them to change the language when they update the Winter Storm Watch. I will post it when it comes out.