伴随着66正式版本的发布，Mozilla Firefox 67.0 Beta 3 (Quantum)今日也紧随其后来到了Beta目录，67版本的最大改进是支持多个配置文件一同运行，在“文件”菜单中，用户可以选择从另一个浏览器导入配置文件。并且，除非您在设置中允许，否则添加到浏览器的任何新扩展都无法在隐私模式中运行。
New
Intent to ship:WebRender was enabled by default in Betas since Firefox 64 for Desktop NVIDIA GPUs onWindows10 and should be released with Firefox 67 in May
Firefox 67 willl be able to run different Firefox installsside by side by default.
Tabs can now be pinned from thePage Actionsmenu in the address bar
Users can block known cryptominers and fingerprinters in theCustomsettings or theirContent Blockingpreferences
TheImport Data from Another Browserfeature is now also available from theFilemenu
Firefox will now protect you against running older versions of Firefox which can lead to data corruption and stability issues.
Fixed
Varioussecurity 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.
细心的用户可能注意到了，近期的Firefox Beta测试过程都是从Beta 3开始的，而更早一些的版本则会出现在nightly目录里。
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