Firefox Beta and Developer Edition
Release Notes

When suggesting a default translation language, Firefox will now take into consideration languages you have previously used for translations.

Firefox will now temporarily remember when users grant permissions to sites (e.g. geolocation). Temporary permissions will be removed either after one hour or when the tab is closed.

Hovering the mouse over an unfocused tab will now display a visual preview of its contents.

You can now enable protection against suspected fingerprinters on Firefox for Android using custom and strict enhanced tracking protection options.

SameSite=None cookies will now be rejected when there is no Secure attribute included.

Bookmarks in Firefox for Android are now saved in the folder where you last added a bookmark, instead of defaulting to the top-level bookmarks folder.

As part of the ongoing updates to SVG 2, SVGGraphicsElement.nearestViewportElement and SVGGraphicsElement.farthestViewportElement have been officially removed. Please note that these properties have had deprecation warnings since February.

Firefox now supports text fragments, which allows users to link directly to a specific portion of text in a web document via a special URL fragment. (Learn more)

Support for Cookies Having Independent Partitioned State (CHIPS) was now added, allowing developers to opt a cookie into storage partitioned per top-level site. (Learn more)