It moved to the Linux Foundation in 2020[0] and has been getting active development since about 2023[1].

I guess I should also add that it is just the rendering engine, not a full browser

[0] https://servo.org/blog/2020/11/17/servo-home/

[1] https://servo.org/blog/2023/01/16/servo-2023/

Yes. It now has a life of its own.