Mozilla Firefox 52 Beta 4 今日发布，主要增强了Sync同步功能中发送标签页的特性，让触屏版更好支持多进程运行，之前介绍过的在非HTTPS页面上如果出现密码框则会有安全提示在52版本中已经部署。与此同时，52版本削减了对一些旧插件的支持，还优化了下载时的体验。
下载地址:
https://ftp.mozilla.org/pub/firefox/releases/52.0b4/
Firefox Beta January 25, 2017
Version 52.0 beta, first offered to Beta channel users on January 25, 2017
New Send and open a tab from one device to another with Sync Windows 8 touch screen support for multiprocess Firefox Pages containing insecure password fields now display a warning directly within username and password fields. Changed Removed Battery Status API to reduce fingerprinting of users by trackers Removed NPAPI support for plugins other than Flash. Silverlight, Java, Acrobat and the like are no longer supported. Implemented
the Strict Secure Cookies spec which forbids insecure (http:) sites
from setting cookies with the "secure" attribute, and in some cases
prevents an insecure site from setting a cookie with the same name as an
existing "secure" cookie from the same base domain. Improved experience for downloads: Notification in the toolbar when a download fails Quick access to five most recent downloads rather than three Larger buttons for canceling and restarting Improved
text input with some third-party keyboard layouts on Windows, e.g.,
keyboard layouts which have chained dead keys, inputs two or more
characters with a non-printable key or a dead key sequence, inputs a
character even when a dead key sequence failed to compose a character. Developer Responsive Design Mode redesigned and enhanced with device selection, network throttling, and more Screen sharing shows a preview and no longer requires a whitelisted domain Enabled CSS Grid Layout