Fox Force Five!
Did it just feel like yesterday that you upgraded from Firefox 3 to Firefox 4? It really wasn't all that long ago, as Firefox 4.0 hit on March 22, 2011. Now just three months later, Firefox 5.0 is set to hit.
The official launch date of the new Firefox is June 21 – the longest day – but Mozilla has already released it to its FTP in final version form. Grab the latest Firefox 5.0 download for the platform of your choice in the links below:

heres the new...
Added support for CSS animations
The Do-Not-Track header preference has been moved to increase discoverability
Improved canvas, JavaScript, memory, and networking performance
Improved standards support for HTML5, XHR, MathML, SMIL, and canvas
Improved spell checking for some locales
Improved desktop environment integration for Linux users
WebGL content can no longer load cross-domain textures