Mozilla Firefox 57 浏览器 Beta 版发布，并正式将其命名为Firefox Quantum。该品牌还包括一个新的标志。Mozilla表示，引擎在浏览器中很重要。这就是为什么Mozilla正在发布一个全新的Firefox Beta版，一个完全重新发明的现代化引擎。由于Firefox 57这个名称不能真正传达我们所做出的更改，而且这款新Firefox浏览器速度要快得多，所以称之为Firefox Quantum。

Mozilla表示，Firefox Quantum浏览器速度是Firefox 52的两倍。它能够通过使用Rust语言来重建组件提高浏览器的速度，这些组件现在更有效率。 Firefox历史版本仅在一个CPU核心上运行任务，但在Quantum及更高版本中，它将利用多个CPU核心，从而使浏览器速度更快。

通过使用Rust编写的新CSS引擎，Firefox可以并行使用多个CPU来缩短加载时间，Mozilla声称没有其他浏览器可以执行此操作。为了进一步提高速度，Mozilla将用户打开的选项卡放在首位，并且采用多进程架构。 Firefox Quantum在某些网站上的打开速度超过Chrome，同时使用的内存减少30%。该团队还修复了468个浏览器问题，这可能会导致速度上升。

下载前注意：由于浏览器扩展作者大部分还没有针对Firefox 57进行更新，因此绝大多数的扩展在当前的Beta测试时期均无法使用。

更新列表：

In October of last year we announced Project Quantum, our effort to create a next-generation engine. Firefox 57 includes many aspects of this project, so we’re calling this release Firefox Quantum.

Firefox Quantum is roughly 2X faster than Firefox 49 on the Speedometer 2.0 benchmark, thanks to its new CSS engine, its “just right” multi-process architecture, the way it prioritizes your active tab, and much more. Firefox Quantum also includes a visual refresh – Photon – that looks and feels right at home with modern operating systems. To learn more about Firefox Quantum, visit the Mozilla Blog.

New

Firefox is getting a major Visual Redesign (Photon project) activated on the Nightly channel and which will ship with Firefox 57 on the release channel.

Allow users to manage the site data

Added support for Date/Time input

Accessibility indicator will now appear in the title bar of the window when Accessibility services are enabled

Changed

Support more strict sandboxing protection (level 3) on Linux

The browser's "autoscrolling" feature now uses asynchronous scrolling, similar to other input methods like mousewheel, providing a smoother scrolling experience.

Middle mouse paste in the content area on Unix systems no longer navigates to URLs by default

Developer

The "Share" button was removed. If you relied on this feature, you can install the Share Backported extension instead

下载地址:

https://ftp.mozilla.org/pub/firefox/releases/57.0b13/