UPDATE: Where is the Microsoft Lync Mobile Client? Finally Revealed Exactly Where It Is

At least this is the closest I could come to where it is. ;-)
Okay, sorry, just had to do that.

For serious news on where is is:
http://windowspbx.blogspot.com/2011/09/its-official-microsoft-releasing-lync.html

For screenshot of Windows Phone 7 Lync client:
http://windowspbx.blogspot.com/2011/07/more-details-screenshots-of-lync-for.html

To be the first to see it, watch here:
http://www.windowsphone.com/en-US/search?q=lync