Mozilla Firefox 50.0 was released on November 15, 2016. Mozilla postponed the release of the new stable version of the Firefox web browser to ship it with noticeable startup improvements.
Note: if you are reading this article on November 15, 2016: Mozilla will release Firefox 50.0 today. It is already available on the FTP, but the roll out of the update may not have happened yet.
Mozilla Firefox 50 is the latest stable version of the browser. It replaces previous stable versions when installed, including the recently released Firefox 49.0.2, 49.0.1 and 49.0.
All beta channels have received updates as well. This means that Firefox Beta is now on version 51, Firefox Developer Edition on version 52, and Firefox Nightly on version 53. Firefox ESR, the Extended Support Release version of the browser was updated to version 45.5.
Installed copies of Firefox will pick up the new version once it is pushed out by Mozilla. Firefox ships with automatic updates enabled, which means that you don't need to do anything to upgrade Firefox if that is the case.
You may check for updates manually however to speed up the process. This is done by tapping on the Alt-key in the browser, and selecting Help > About Firefox. Firefox lists the current version in a window that opens, and runs an update check on top of that.
You may download all editions of Firefox using the links below instead.
Only this much: Mozilla noticed better startup performance. Mileage varies and depends on the add-ons that are installed. A quick test by Mozilla revealed that startup performance improved by 35% on systems without add-ons installed, and more on systems with add-ons installed.
Find in page: limit to word matches
Firefox's Find in page functionality is handy as it enables you to search for content on a page quickly.
You can use the shortcut Ctrl-F to trigger the functionality. The new feature comes in form of a checkbox that you can enable for searches. When done, only full word matches are returned.
So, if you search for fire, all instances of the word on the page are highlighted while Firefox, firetruck or fireball are not.
No major developer changes this time around:
Security updates are published some time after the Firefox release. We will add those when they become available.
Mozilla released Firefox 50.0.1 to the stable channel on November 28, 2016. The version fixes a security issue affecting Firefox 49 and 50
Firefox 50.0.1 fixes a crash with third-party Chinese IME when using IME text.
Only days after Firefox 50.0.1, Firefox 50.0.2 has been released. This version fixes a reported 0-day security vulnerability in Firefox.
Firefox 50.1.0 was released on December 13, 2016. It is a planned security release that fixes security issues.
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