How to determine the live azure guest os versions.

Given that the officicial documentation (http://msdn.microsoft.com/en-us/library/azure/ee924680.aspx) I have prepared the following powershell script:

Add-AzureAccount
#Enter username and password
Get-AzureOSVersion | where IsActive -eq $true | Out-GridView

This tells you what is actually live, not just planned.