Yay Debian 7 is out.
Nothing too major to report, I've only updated one VM at this stage (was very easy).
PHP 5.4 is nice to have. I'll be rolling out a number of upgrades and new VMs with it in the coming weeks so I'll see how it goes.
For servers (PHP Web Servers, MySQL, DNS, Subversion etc) Debian is my current favourite OS. It is so easy to manage and upgrade.
My current break down of operating systems is: