I had the same assumption. Or maybe nobody uses the windows version, lol. I did a Google search and checked the plex forums, nobody was talking about the issue. I just sort of walked away after that.
Still, very odd to make an announcement that’s literally not true. Gotta be something weird on my end I guess?
I heard about this yesterday and I downloaded the plexamp app on my windows desktop to try it. When I ran it, the first thing it had me do was sign into it with my plex account. It then tossed an error at me telling me that I need to subscribe to plex pass to use it. I don’t understand the “free” part about this plexamp going free announcement.