This all stands to reason. We'll hopefully hear the big announcement soon.
It's a small group of current and ex-Microsoft-employees and vendor-contractors. I'm an ex vendor-contractor at Microsoft. It's a nice place to meet like-minded SDR enthusiasts.
I don't know how long the pnw sdr sig has been in existence. But we do meet monthly at Microsoft in Redmond, WA. Our next meeting is in a week from now, on the 28th. I will be sharing my DreamCatcher board with the passive airgap antenna. I might post photos and feedback.