This has been released for 2010 - please see:

http://www.gartner.com/technology/media-products/reprints/microsoft/vol10/article19/article19.html

Magic Quadrant for Unified Communications, 2010 (Gartner Research, July 28, 2010). Microsoft is positioned in the Leaders Quadrant. According to Gartner, “unified communications offers the ability to improve how individuals, groups and companies interact and perform tasks.” This research reviews relevant technologies and vendor offerings that can assist in these goals.