Mozilla Firefox 44 Beta 8今日发布，今后发布的Firefox无论Beta还是正式版都会开始支持64位系统，新版带来了新的警告页面，在证书状态异常和连接可能带来不安全的情况下会自动提醒用户，同时44版本开始支持在无法播放MP4/H.264的机器上自动切换WebM/VP9。

下载Mozilla Firefox 44 Beta 8:

https://ftp.mozilla.org/pub/firefox/releases/44.0b8/

Firefox Beta 44.0 beta

Version 44.0beta, first offered to Beta channel users on December 17, 2015

New

• Improved warning pages for certificate errors and untrusted connections

• Enable WebM/VP9 video support on systems that don't support MP4/H.264

• Enable H.264 if system decoder is available

Fixed

• Windows XP and Vista screensaver doesn't disable when watching videos (Bug 1193610)

Changed

• Warning page when RC4 is the only supported cipher

• Firefox will no longer trust the Equifax Secure Certificate Authority 1024-bit root certificate or the UTN - DATACorp SGC to validate secure website certificates

• To support unicode-range descriptor for webfonts, font matching under Linux now uses the same font matching code as other platforms

• Use a SHA-256 signing certificate for Windows builds, to meet new signing requirements

Developer

• Right click on a logged object in the console to store it as a global variable on the page

• Visual tools for Animation:

  • View/Edit CSS animation keyframe rules directly in the inspector

  • Visually modify the cubic-bezier curve that drives the way animations progress through time

  • Discover and scrub through all CSS animations and transitions playing on the page

  • Learn more: http://devtoolschallenger.com/

• Visual tools for Layout and Styles:

  • Display rulers along the viewport to verify size and position and use the measurement tool to easily detect spacing and alignment problems

  • Use CSS filters to preview and create real-time effects like drop-shadows, sepia, etc

  • Learn more: http://devtoolschallenger.com/

• New memory tool for inspecting the memory heap

• Jump to function definitions in the debugger with Cmd-Click

• The rule view now displays styles using their authored text,and edits in the rule view are now linked to the style editor

• Service Workers API

• Built-in JSON reader to intuitively view, search, copy and save data without extensions

• WebSocket Debugging API and add-on

• Add-on signing enforcement

转载自：cnbeta.com