Mozilla Firefox浏览器测试版48.0最近由Mozilla团队发布。一个显着的特点是对恶意软件的下载，WebRTC技术的改进，URL栏中结果面板的新设计，还有更多的增强的保护。
Mozilla Firefox 48.0 beta 更新日志：
New
Enhanced protection against malware downloads
WebRTC improvements:
Delay-agnostic AEC enabled
Full duplex for GNU/Linux and Mac OS X enabled
ICE Restart & Update is supported
Cloning of MediaStream and MediaStreamTrack is now supported
New design of the URL bar result panel with more results
Skia, the graphic library, enabled by default on GNU/Linux for better canvas performances
Tab and Shift+F10 are now also supported in Firefox customization mode
fixed
Fixed Jabra headset and Logitech C920 webcam audio issue; users heard a frequency distorted (i.e. “Mickey Mouse”) voice (WebRTC)
Improved step debugging on last line of functions
changed
Removed integration with Windows Remote Access Service modem Autodial
Ending support for Firefox on OS X 10.6, 10.7, and 10.8
developer
Deprecated Error Console, use Browser Console instead
Expand network requests from the console panel to view request details in line
Geometry editor to move absolute and fixed positioned elements
Tree map view in memory tool
WebExtensions background content scripts and background pages can now be debugged
WebExtensions have Content Security Policy (CSP) enforced
Reload add-ons from about:debugging for easy add-on development
Firebug theme available for Developer Tools
Web Crypto API is now available in Workers
Ubuntu 15.10 Wily Werewolf, Ubuntu 15.04 Vivid Vervet, Ubuntu 14.04 Trusty Tahr, Linux Mint 17.3 Rosa, Linux Mint 17.2 Rafaela, Linux Mint 17.1 Rebecca, Linux Mint 17 Qiana, Pinguy OS 14.04, Elementary OS 0.3 Freya, Deepin 2014, Peppermint 6, Peppermint 5, LXLE 14.04 安装升级 Mozilla Firefox 48.0 beta
sudo add-apt-repository ppa:mozillateam/firefox-next
sudo apt-get update
sudo apt-get install firefox