The great people at the Mozilla Foundation have just released the Beta 4 of Firefox 3 for download.  This is the latest incarnation of the now hugely popular Firefox browser and is a major milestone as this release is likely to be very close to the final version of Firefox 3.  It contains a heap of new features too:

Firefox 3 is up to 300% faster than Firefox 2, thanks to a complete replacement of the rendering engine.  Importantly for me, Firebug (see previous post) is now available in a new 1.1 Beta version that supports Firefox 3.  So you can continue to use Firebug as you help test Firefox 3.