I will create a case and get this up to our data team to see if we can support this update.
In the meantime, you could look into creating a custom patch using the steps in the following Help document within Protect:
Help > Contents > Agentless Patch Management Tasks > Creating Custom Patch XML Files > Creating a New Custom XML File
I have created case number 76828 concerning this. I will update as soon as I find out if we can provide support for this patch.
Support for WSUS 3.0 SP2 and KB2720211 will be added in our XML release later today. Make sure to run Help > Refresh Files in Protect after the new XML is released.
You can see when it's released out here: http://protectessentials.shavlik.com/