伴隨著66正式版本的發布，Mozilla Firefox 67.0 Beta 12 (Quantum)今日也緊隨其後來到了Beta目錄，67版本的最大改進是支持多個配置文件一同運行，在“文件”菜單中，用戶可以選擇從另一個瀏覽器導入配置文件。並且，除非您在設置中允許，否則添加到瀏覽器的任何新擴展都無法在隱私模式中運行。

New

• Intent to ship: WebRender was enabled by default in Betas since Firefox 64 for Desktop NVIDIA GPUs on Windows 10 and should be released with Firefox 67 in May
• Firefox 67 willl be able to run different Firefox installs side by side by default .
• Tabs can now be pinned from the Page Actions menu in the address bar
• Users can block known cryptominers and fingerprinters in the Custom settings or their Content Blocking preferences
• The Import Data from Another Browser feature is now also available from the File menu
• Firefox will now protect you against running older versions of Firefox which can lead to data corruption and stability issues.

Fixed

• Various security fixes

Changed

• Firefox no longer supports handling webcal: links with 30boxes.com
• Change to extensions in Private Windows:  Any new extensions you add to the browser won’t work in Private Windows unless you allow this in the settings.

Developer

• The DevTools Changes panel now supports copying modified CSS. You can either copy the full changes or individual changed rules.

細心的用戶可能注意到了，近期的Firefox Beta測試過程都是從Beta 3開始的，而更早一些的版本則會出現在nightly目錄裡。

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