During the nightly assemblies of Firefox, which serve as the basis for Firefox 128, a new widget showing weather forecasts has been added to the Discoveries section of a new tab. Users can enable this widget by adjusting the settings in ABOUT: Config Settings for Browser.newtabpage.activity-stream.newweather and Browser.newtabpage.activity-stream.System.showweather.
Furthermore, the nightly assemblies now come with additional protection against redirects (Bounce Tracking Protection) enabled by default. A decision has also been made to disallow the installation of add-ons in Firefox 127 if their XPI files are signed using insecure algorithms. This will be implemented by setting Pref_xpi_weak_signatures_allowed to FALSE by default. More information about this ban can be found on Bugzilla.