其实大概前天更新了74.0.1，有2个安全性更新，不想升到75.0的记得先升一下74.0.1
(security fixes)
官方版本76.0预计在 2020年05月05日(美国时间) 台湾时间05月05日~06日 更新
更新日志
https://www.mozilla.org/en-US/firefox/75.0/releasenotes/
New︰
With today's release, a number of improvements will help you search
smarter, faster. Type less and find more with Firefox's revamped address bar:
https://blog.mozilla.org/?p=12554
https://support.mozilla.org/kb/search-firefox-address-bar
．Focused, clean search experience that's optimized for smaller laptop
screens
．Top sites now appear when you select the address
．Improved readability of search suggestions with a focus on new search
terms
．Suggestions include solutions to common Firefox issues
．On Linux, the behavior when clicking on the Address Bar and the
Search Bar now matches other desktop platforms: a single click selects all
without primary selection, a double click selects a word, and a triple click
selects all with primary selection
Firefox will locally cache all trusted Web PKI Certificate Authority
certificates known to Mozilla. This will improve HTTPS compatibility with
misconfigured web servers and improve security.
Firefox is now available in Flatpak, an easier way to install and use
Firefox on Linux.
Direct Composition is being integrated for our users on Windows to help
improve performance and enable our ongoing work to ship WebRender on Windows
10 laptops with Intel graphics cards.
Fixed︰
Various security fixes
https://www.mozilla.org/security/known-vulnerabilities/firefox/#firefox75
Enterprise︰
Experimental support for using client certificates from the OS
certificate store can be enabled on macOS by setting the preference
security.osclientcerts.autoload to true.
Enterprise policies may be used to exclude domains from being resolved
via TRR (Trusted Recursive Resolver) using DNS over HTTPS.
Developer︰
https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/75
Save bandwidth and reduce browser memory by using the loading attribute on
the <img> element. The default "eager" value loads images immediately, and
the "lazy" value delays loading until the image is within range of the
viewport.
Instant evaluation for Console expressions lets developers identify and fix
errors more rapidly than before. As long as expressions typed into the Web
Console are side-effect free, their results will be previewed while you type.