MIM 2016 Server Installation Download, Where do I find it?

I feel stupid having to as this, but:

I have been using the MSDN version of MIM 2016 for my Lab, but now I need to move into production and I can not find where to download the GA release of MIM 2016. I meet the requirements of having MIM 2016 Cals, and Windows Server with SA, but I dont see the server download in my volume license site or anywhere else for that matter.

The MIM site states that:

Microsoft Identity Manager 2016 is licensed on a per-user basis. A Client Access License (CAL) is required for each user whose identity is managed. A Windows Server license with active Software Assurance is required to use Microsoft Identity Manager 2016’s server software as a Windows Server add-on.

So, where do I download or acquire this "add-on"?

Thanks!