Firefox 3.6 will be released later today, available to download at 9:30 am PST around 5:30 pm GMT. Although delayed this release which was expected last December can only be good, with all the reported problems Internet Explorer is having at the moment. Which have already lead to increased downloads of Firefox. Check out the video for about the new features in Firefox 3.6
Verison 4 of Firefox is expected to be launched this summer.