=== New in Firefox 4 ===
* See the [http://www.mozilla.com/en-US/mobile/4.0/releasenotes/ Firefox 4 release notes].
=== New in Firefox 5 (AuroraBeta) ===
* Added a preference for the '''[httphttps://dntwww.mozilla.orgcom/ Do Not Track]''' header ({{bug|648654}}).* Smoother scrolling ({{bug|639179}}).* New visual design for dialogs and popups ({{bug|618989}}).* Performance improvements for page loading, JavaScript, and video.* For web developers:** Support for '''[http:mobile//dbaron5.org0beta/logreleasenotes/20110419-animations CSS3 AnimationFirefox 5 Beta release notes]'''.* Fixed bugs:** SwiftKey keyboard crashes ({{bug|617298}}).** Saved images don't appear in the Gallery app immediately ({{bug|646550}}).** Some bugs in RTL (right-to-left) languages like Arabic.
=== New in Firefox 6 (Nightly) ===