upgrade to wheezy with PVE 2.3

theres a few threads about testing wheezy and proxmox 3.0 which is not yet stable

i come to ask the question has upgrading a proxmox 2.3 install from squeeze to wheezy been tested and does anyone know if it works or is supported?

I've set all my PVE boxes up by starting with blank squeeze installs rather than direct from PVE iso