Firefox 4.0 was officially released on 22nd March 2011.
Like Internet Explorer 9, there has been a lot of visual updates.
Version 4.0.1 was released on the 28th April 2011 which fixes some stability and security bugs. The cautious out there might now consider updating to Mozilla's latest internet browsing offering.
Firefox 4 is supported by Firebug 1.7, so all is well from a developer perspective.
Whats new?
- redesigned extension manager and notifications
- faster browsing
- tabs on top
- new Firefox menu on Windows, app tabs
- integration with Firefox Sync and Panorama
- WebM support, WebGL support
- GPU-based hardware acceleration of web content
- improved support for HTML5 and CSS3 features
