We just released Proxmox VE 2.1, including a lot of bug fixes the new Virtual Machine Startup and Shutdown Behavior.
A big Thank-you to our active community for all feedback, testing, bug reporting and patch submissions.
simplify GUI for users without permissions
implemented startup/shutdown ordering
improved task logs on node startup/shutdown
added Russian, Italian and Turkish translation
updated corosync cluster stack to 1.4.3
update LVM to 2.02.95 (fixes snapshot problems)
Upgrade from 2.0
Just run 'aptitude update && aptitude full-upgrade'
Upgrade from 1.9 to 2.1http://pve.proxmox.com/wiki/Upgrade_from_1.9_to_2.0