Mozilla released Firefox Preview 4.0 on March 9, 2020, the latest stable version of the upcoming re-interpretation of Firefox for Android. The new browser version is only available on the project's GitHub webpage at the time of writing and not on Google Play.
The Google Play version is at 3.2.1 currently while the GitHub version brings the version of the mobile browser to 4.0. Users who want to upgrade to the new version of Firefox Preview Stable right away may download the APK file from the releases page and install it manually. It is necessary to allow the installation of apps from unknown sources to do so though.
Mozilla highlights several new features in Firefox Preview 4.0 including initial extension support, inclusion of the uBlock Origin extension by default, improved login management, and options to bypass certification errors.
One of the main new features of Firefox Preview 4.0 is initial support for browser extensions. While officially limited to the content blocker uBlock Origin, Mozilla promised that it would improve support throughout 2020 to integrate full extensions support in the new mobile Firefox browser.
The uBlock Origin extension is not enabled by default but Firefox Preview users may enable it by selecting Menu > Add-Ons Manager > uBlock Origin. The list of permissions the extension requires is displayed then and a tap on "add" enables the extension in Firefox Preview. The extension can then be managed via Firefox's main menu button. It is a bit harder to manage sites in the extension because of that but all functionality appears to be available.
As far as other major improvements are concerned, there are a few in the release:
Now You: have you tried the new Firefox Preview already? What is your impression?
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