The first official alpha release of Nagios 3 is now available! This is development code, so I wouldn’t recommend replacing your stable Nagios 2.x installation with it yet. Lots of improvements have been made since Nagios 2.x. Read What’s New for more information. You can download the alpha release here.
Nagios Update: XI 5.6.6
Nagios XI update 5.6.6 is now released! This update resolves a number of minor bugs and one security vulnerability fix. This version also includes improvements