Mozilla Firefox 46 Beta 1今日已经被上传到FTP服务器，包含全平台全语种版本，不过到目前为止Mozilla官方还没有公布46版的更新列表，想了解更新了些什么只能通过自己下载测试，或者等待文本的公布。
更新列表:
https://www.mozilla.org/en-US/firefox/46.0beta/releasenotes/
Version 46.0beta, first offered to Beta channel users on March 8, 2016
New
HTTP sites containing login forms will be marked insecure
Improved security of the JavaScript Just In Time (JIT) Compiler
GTK3 integration (GNU/Linux only)
Use Content Decryption Module as a fallback to decode unencrypted H.264 and AAC media where available
Changed
WebRTC fixes to improve performance and stability
Developer
Display dominator trees in Memory tool
Allocation and garbage collection pause profiling in the performance panel
Launch responsive mode from the Style Editor @media sidebar
Developer Information
HTML5
Added support for documents.elementsFromPoint
Added HKDF support for Web Crypto API
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