Without a doubt, the release of Firefox 3.5 is the biggest browser-related news of the month.
Firefox 3.5 is a definite improvement over its successor, offering faster browsing, better tab handling, UI improvements and, probably most important of all, private browsing, otherwise called "porn mode."
More Firefox 3.5 reviews here at Reuters.
Link: Review: Firefox 3.5 makes browsing faster, easier