Kali Linux is an incredibly powerful tool for testing network vulnerabilities and today it's getting a lot easier to use with a new new interface, automatic updates, and more.
The big improvement here comes in the form of a new, snappier interface. Instead of a series of menus, the most popular tools are now accessible from a dock on the side of the screen for easy access. That said, Kali Linux still supports other desktop environments if you'd prefer. The new version is also now a rolling distribution, which in practical terms means that updates are a lot easier to do. The tools themselves also get automatic updating too, so you'll always have the most cutting edge tools for testing exploits. You can snag the new image from their site below, or head over to the Kali Linux blog for information about how to update.