Firefox Beta is the build for those who like a little bit of jeopardy, but who don’t want to risk everything by trying out Firefox Aurora, the early alpha build of Firefox. Firefox Beta gives you a sneak peek at the next version of Firefox six weeks ahead of its final release, offering a relatively stable build that’s not quite ready for primetime, but still pretty solid.
Whereas Firefox Aurora installs as a completely separate application alongside your existing Firefox installation, Firebox Beta will replace the stable build. Should you subsequently wish to go back to the safer version, you’ll need to manually download the stable version and install it over the top of the beta build.
Confirm which build you have by selecting About Firefox from the Firefox menu or button (it’s inside the Help menu if using the Firefox button).
Firefox 47 is now in the Beta channel. New features include:
- NEW. Allow no-cache on back/forward navigations for https resources
- NEW. WebCrypto: RSA-PSS signature support
- NEW. Review Firefox performance data in about:performance
- NEW. Smart multi-line input in the Web Console
- NEW. Functionality in about:debugging to simulate Push messages for testing
- NEW. Allow users to view and debug all the registered SWs in about:debugging#workers
- NEW. New Devtools for Service Workers adds a button to start registered SWs
- NEW. Enable VP9 video codec for users with fast machines
- NEW. Support for Google’s Widevine CDM on Windows and Mac OS X.
- NEW. Added support for ChaCha20/Poly1305 cipher suites
- NEW. Embedded YouTube videos now play with HTML5 video if Flash is not installed