Mozilla Firefox 61.0 Beta 发布，主要带来了Quantum引擎性能上的改进，优化了处理CSS的过程，让页面加载速度更快，并且用户还会感觉到切换标签页也会变快。同时Firefox 61.0 Beta还提供了对暗色主题的支持。有兴趣的朋友可以登录Mozilla FTP下载到这一版本。

下载地址:

https://ftp.mozilla.org/pub/firefox/releases/61.0b5/

New

• Performance Enhancements:

• Quantum CSS improvements which improve page rendering times

• Improved page rendering speed with the new retained display list feature

• Faster switching between tabs on Windows and Linux

• WebExtensions now run in their own process on MacOS

• Various improvements for dark theme support will provide a more consistent experience across the entire Firefox UI

• Added the ability to share current the URL with MacOS sharing providers from the Page Actions menu

• OpenSearch plugins offered by web pages can now be added from the page action menu for easier installation

• Improved support for allowing WebExtensions to manage and hide tabs

Changed

• The settings for customizing your homepage and new tab page in Firefox have been moved to a new Preferences section, Home. It can be accessed from the sidebar in Preferences or by visiting about:preferences#home

• In order to improve user security, access to FTP subresources inside http(s) pages has been blocked

Developer

• A new drop down menu was added to the Developer Tools Network panel to allow bandwidth throttling, rather than requiring users to do so via Responsive Design Mode