There appears to be no official page up yet on the announcement, and it is possible they may never be, but I have confirmed it is now supported by Microsoft and I am including their test upgrade document.
Grab CU4 here and finally approve it for your WSUS patching teams without fear or rebuilding an entire LHPv2 platform :-)
Grab the CU4 test document here.
Enjoy!
Oliver Moazzezi - MVP Exchange Server
