The world’s best browser just got better.

FireFox is finally out of beta, and is in its “preview” release, which means…well, it’s a little hard to understand exactly what it means, other than that it’s been improved, and is one step closer to its final form.

If you’re an Internet Explorer user, you owe it to yourself to download FireFox and see how a real browser works. If you’re already a FireFox user, download the latest version, for a slew of new features.

My favorite is its new RSS support – when you’re on a page that has an RSS feed using the <link> tag, an RSS icon appears in the status bar. Click it, and you’ll see a list of all feeds on the page. Then click on any to subscribe, and you’ll be able to read the feed from directly within FireFox.

There are other goodies as well. There’s a nice new Find toolbar across the bottom of the page, better bookmarking, more flexible popup blocking, and more as well.

Unfortunately, there’s also a downside to the update. Many extensions won’t work with it, including the Googlebar. In time, expect the extensions to be updated, but for now, you’ll have to forgo some of your favorites.

The newest version of FireFox shows just how tired and old IE has become. In time, perhaps, it’ll join the modern era and add features such as tabbed browsing. But for now, if you’re looking for the smartest, slimmest, and most feature-rich browser, you should head straight to FireFox.

What do you think of the newest version of FireFox? Let me know.