The Hollywood Hills tower (near Woodinville) has finally been upgraded! I drove by it today to confirm. This should dramatically improve the coverage in an area which is often very much a dead zone or near dead zone.
Also, @S4GRU I moved a tower you had pinned in Kenmore. You had it pinned at what used to be a Sprint Keep site but it was actually the tower up the hill by NE 180th St. which had been upgraded. I really doubt that Sprint Keep site is going to be kept at this point.
Bit by bit, more and more decomm permits are coming through in the Kirkland/Bothell/Kenmore area.
Lastly, just an FYI for those in the area, Ziply Fiber just released their 10gig/10gig tier of home internet (and also dropped the price of their 2gig/2gig and 5gig/5gig plans).