Source: http://blogs.technet.com/b/ad/archive/2015/08/06/microsoft-identity-manager-2016-is-now-g

Links: still pointing to the wrong links a week after you posted - to Microsoft Advanced Threat Analytics Forum - not to MIM2016

The announcement page (http://blogs.technet.com/b/ad/archive/2015/08/06/microsoft-identity-manager-2016-is-now-ga.aspx) points to http://microsoft.com/mim which is an alias for

http://https://www.microsoft.com/en-us/server-cloud/products/microsoft-identity-manager/

which (in the top right corner, "Try Now") now points to

http://www.microsoft.com/en-us/evalcenter/evaluate-microsoft-identity-manager-2016

I just got the URLs above copied, a few seconds ago... and they seem to be fine.

My2c