IcelandAir new partnership with Alaska Airlines and double miles

Hey Pacific NW Friends,

IcelandAir is now partners with Alaska Airlines again:

http://splash.alaskasworld.com/Newsroom/ASNews/ASstories/AS_20150923_045646.asp

Here's the TL;DR

• If you're already flying with IcelandAir between Oct 1 and Dec 15, this year, you should register for double miles here
  http://www.alaskaair.com/www2/Promo/Registration/PromoEntry.aspx?INT=MPDouble_||20150923_MPReg||-prodID:MileagePlanDeals&pid=FI1501

• IcelandAir award flights will be bookable using Alaska miles "later this year," but there's no date given