The first sections of concrete are going to be poured later this month for the new 6th runway.
The new runway will be 16,000ft. long and 200ft. wide and will be the longest commercial runway in North America.
It's main goal is to allow non-stop service to Asia which currently is not possible on any long-range widebody aircraft without severe weight restrictions. Tests have shown that the A340 is best fit for the job to operate to Asia with the current 12,000ft. runways, however it will still suffer severe weight restrictions which will make the flight not economical.
The new runway will allow fully loaded A340s, 777s, and 747s to take-off and fly on to Asia.
So far, JAL has expressed the most interest in operating a NRT-DEN flight. A couple months ago when the Mayor went to Japan, he met with JAL CEO's who expressed "great" interest to him in operating a non-stop flight to Denver (DEN) within the next few years.
Recently, ANA has also expressed interest, probably in response to JAL.
Here is the full article about the new runway:
I do think that there is definately a market for non-stop NRT service. I could see NRT-DEN coming in 2-4 years from now, and possibly a little earlier.
At a later stage in about 10 years or so, I could see non-stop service to HKG and some other Asian cities.
"Generosity is giving more than you can, and pride is taking less than you need." - Khalil Gibran