Major versions of Firefox now land every two weeks, so Firefox 155 dropped today with web platform features including:

🎉 Fully typed CSS attr()
🎉 CSS progress()
🎉 CSS alpha()
🎉 Promise.allKeyed() and allSettledKeyed()
🎉 Wasm wide arithmetic
🎉 Lots of new WebTransport stuff

…And more!

https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/155