I raced there last month. Beautiful facility, all things considered probably the best in the US although I have not been to Laguna, Sears Point or Fontana. Have been to all other major tracks(spectating not always riding).
The track is extremely wide and roomy, very technical with over 800 feet of elevation change. It already needs to be repaved though.
Facilities and the people are great and it should be an awesome spectator track. It isn't quite as world class as the hype suggests because it is still very tight and technical but is a great track.