A separate waiver is being pushed out to cover basically everything else in the Central & Northwest (including as far as Washington state). Denver is part of that waiver which covers 12/20-12/23 travel dates. Doesn't appear to be live on united.com or Jetstream yet, but will probably be live within the next few hours (and I'm sure will get .it's own thread by DELee when it does). Basically there will be waivers in effect coast to coast for the northern half of the US.