Sceneform != Filament. Sceneform was an AR-oriented framework that used Filament as its renderer. Filament itself is very much alive and under active development.

As far as I remember, one was used to implement the other.

Can you provide examples of commercial Google products and SDKs using Filament?

Like I said, Sceneform used Filament (not the other way around). I know of a few Google products that use Filament but having left the company I'm not sure what I'm at liberty to talk about unfortunately. Btw, I'm one of the authors of Filament :)

I know, I do follow you since the Filthy Rich Client blog series at Sun, hence why I asked.