Too bad.  Maybe I'll take a look at Lync on the iPhones.. 

http://lync.microsoft.com/en-us/what-is-lync/Pages/what-is-lync.aspx?Title=mobile-apps&tabID=4&itemID=4

Jabber provides a number of capabilities across a variety of devices...the link you provided is basically an overview similar to the following:

http://www.cisco.com/web/products/voice/jabber.html

You can register the Jabber client on a mobile device as a SIP phone with CUCM, leverage mobility features, access corporate directory, and etc.

Hailey

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