Ladybird says 2026. Given the current state and progress, I believe it may be quite usable by then. I use it sometimes for basic surfing and leaving forum comments. It works surprisingly well often though it is still far from general use. I think the dev team tries to use it themselves for things like Discord and GutHub. They did a demo last month where it “almost” ran Gmail.

I am not sure that Servo has set a timeline. I expect it to take longer.