Zabbix 1.8.6 has been released on August 4th. Within this relase several new features have been added and even more improvements are implemented:
Added ability to force configuration cache reload of a running server and proxy, which, in the case of active proxy, will also force config re-read from the server.
Zabbix will complain if there are unsupported attributes in server, proxy or agent configuration files.
It is safe to use Zabbix with the latest releases of PostgreSQL.
Added performance monitoring of LVM devices.
Download the new release here: http://www.zabbix.com/download.php