Ugh, I wouldn't wish the Fuchsia upgrade on anyone. It turned both of my Nest Hubs into unstable disasters. Randomly dropping wifi, refusing to answer to the wake phrase, swapping PhotoFrame settings at random, missing backgrounds on displays of info... "Feedback" to Google has yielded nothing. I am hoping for an update soon, WAF is plummeting.
That Nest v1 is up and running now; it gets discovered properly and works as expected.
This does look like Fuschia is installed, at least according to this 9to5google article. Am I missing something? The software version on my Nest hub (screenshot below) looks right.
Yeah, you have to enable the preview program, then just wait. No guarantee that it'll update. You'll know when it has be visiting the 'About Device' page and look for the “Operating system version". If you have that line, then you're on Fuchsia.