官方版本46.0预计在 2016年4月26日 更新
https://zh.wikipedia.org/wiki/Firefox%E7%89%88%E6%9C%AC%E5%8E%86%E5%8F%B2
更新日志
https://www.mozilla.org/en-US/firefox/45.0/releasenotes/
new：
Instant browser tab sharing through Hello
Tabs synced via Firefox Accounts from other devices are now shown in
dropdown area of Awesome Bar when searching
Synced Tabs button in button bar
Introduce a new preference (network.dns.blockDotOnion) to allow blocking
.onion at the DNS level
Guarani [gn] locale added
fixed：
URLs containing a Unicode-format Internationalized Domain Name (IDN) are
now properly redirected
Various security fixes
changed：
Tab Groups (Panorama) feature removed
developer：
Ability to filter snapshot output in memory tool
Fine tune animations by changing the playback rate of animations in the
animation-inspector's timeline
DOMContentLoaded and load events shown in the network monitor timeline
Added Negative url filtering for the network monitor
Support for diffing heap snapshots added to the memory tool
Inspector search now matches results from all content in the page,
including subframes
List of animated properties and keyframes is now displayed when clicking
on an animation in the animation-inspector’s timeline
html5：
Push API support, part of Progressive Web Applications
Support delivery of a Content Security Policy (CSP) via a meta tag
Web Speech synthesis API
ES6 Classes
unresolved：
On-screen keyboard support was temporarily turned off for Windows 8 and
Windows 8.1
官方载点:
http://mozilla.com.tw/firefox/download/?os=win&install=full
另一个载点:
http://download.mozilla.org/?product=firefox-45.0&lang=zh-TW&os=win
Mozilla的FTP服务器:
http://ftp.mozilla.org/pub/firefox/releases/
可以手动【说明】->【关于Firefox】 更新