The following is the current active Azure Guest OS Version as at 16:40 gmt 1st November 2014

Family	IsActive	IsDefault	Version
1	True	False	WA-GUEST-OS-1.36_201406-01
1	True	False	WA-GUEST-OS-1.37_201407-01
1	True	True	WA-GUEST-OS-1.40_201410-01
2	True	False	WA-GUEST-OS-2.26_201404-01
2	True	False	WA-GUEST-OS-2.28_201406-01
2	True	False	WA-GUEST-OS-2.29_201407-01
2	True	True	WA-GUEST-OS-2.32_201410-01
3	True	False	WA-GUEST-OS-3.16_201406-01
3	True	False	WA-GUEST-OS-3.17_201407-01
3	True	True	WA-GUEST-OS-3.20_201410-01
4	True	False	WA-GUEST-OS-4.10_201407-01
4	True	True	WA-GUEST-OS-4.13_201410-01
4	True	False	WA-GUEST-OS-4.9_201406-01

It can be assumed that the current N-1 will be disabled on the 1st December 2014 according to http://msdn.microsoft.com/en-us/library/azure/ee924680.aspxhttp://msdn.microsoft.com/en-us/library/azure/ee924680.aspx

This does mean that we currently have three available OS version rather than the normal two.

The Azure team do not seem to understand that peak uses of cloud software are likely to be at weekends and overnight.

Cloud environments at large scale ups are likely to be entertainment or advertising based which spike when consumers are at home.

The best time to patch a cloud platform is 8 am GMT on a tuesday morning, preferably after informing your customers that you are going to do so at least a week in adavnce.

I am going to post an update of this whenever I notice a change in the deployed environments.