Ubuntu 12.04 "Precise Pangolin" is out today, bringing lots of improvements to your favorite Linux distribution. It has a new quick search feature called the HUD, some new privacy settings, a few tweaks to the Unity interface, and more.
This release is another "Long Term Support" release, meaning Canonical will support it for longer than other versions—five years, to be exact. It also usually means lots of new features, though this time around it seems to be more polish than anything—though the HUD alone is reason enough to upgrade. Here's a look at everything that's new.