Firefox For Desktop
Heartbeat
This is Firefox’s new way for getting feedback from users on how well the browser is performing. It seems to be enabled by default and if it gets annoying (as any pop-up can), you can disable it by going to about:config and setting the value of browser.selfsupport.url to “”
Animations Panel In Inspector
There’s a new tool for working with web animations. Developers can access it from the Inspector. It appears next to the Rules, Computed, Fonts, and Box Model tabs when you open the inspector and select an element. With it web developers can now use web technologies instead of plug-ins to create complex animations.
Security Tab In Inspect Panel
If you select the Network tab in the Inspect panel and select a request you will see a new tab in the right-side panel called Security. Developers can view information about certificates and the host from it.
Firefox For Android
There are few UI changes for Firefox for Android. Your downloads will be handled better, a few new languages have been added, and like the desktop version, the Android version has also set Yandex as the default search engine for users in Turkey. There is one UI change that’s been to the URL bar; it will now show the URL instead of the page title as it previously did (before and after shown below).
You can read the release notes for the desktop and mobile versions on Mozilla’s website.