The 4th beta of Nagios Core 4 is now available and can be downloaded from
Thanks to all who contributed to and tested this release.
Note that the Changelog has not been updated, but will be before a full release. For more information about the changes in Nagios Core 4, see the slide deck for Andreas' presentation at last year's Nagios World
Nagios Enterprises, LLC
Nagios-announce mailing list