Thanks for the info, that's good news.

Or you could look at as really bad news if it takes a decade to implement this.

I mean, Selenium has worked for Firefox for years so it's not like this was a priority.

It's a decade to decide this is worth doing, which is reasonable given that there's also a "good enough" solution out there; Selenium.

Good enough to be the W3C standard. https://www.w3.org/TR/webdriver/