Last I heard, KIRO-FM was still around. They do news around the various talk hosts.Yes, I meant the KOMO radio format. All-news radio is extremely expensive, and I don't see it continuing without KOMO operating their own radio station with the format, and using their own content to fill the time. I think it's a 100% guarantee that all-news radio is history in this market.
Honestly, I'm not sure there is enough non-stop news to support a stand-alone news radio station in the Seattle market without a lot of repeating stories and cost. Even here in D.C. the top billing WTOP, does a lot of story repeating. They also have a partnership with the local NBC station, who share a lot of content with them. One has to remember though, with WTOP, they're covering news technically in two states plus the District of Columbia. KOMO covers a single market made up of mainly two cities, Seattle and Tacoma.