The road to final release of Firefox 4 has been a long and dusty one, but Mozilla is finally getting there with the release of Beta 5.
New in this build is hardware-accelerated rendering for Windows 7 enabled by default. This means the browser can use Direct2D to offload some of the workload onto the PC’s GPU, dramatically improving rendering performance. Benchmarks seem to conclude that Firefox 4 beta is now faster than Google Chrome, but I’m going to wait until the final release to carry out detailed testing. In read-world usage, it’s hard to see any real speed gains.
Another new feature is the Audio Data API which gives developers the ability to read and write data to audio files as part of HTML5.
There is also a revamped UI for Windows 7/Vista users.
You can download Firefox 4 beta 5 from Mozilla, as well as check out the complete release notes (if you are thinking of using this beta, do check out the “Known Issues” section of the release notes).
One more beta of Firefox 4 is planned by Mozilla.





