Application downloaded this morning on the AppStore...
http://blog.collaborationmatters.com/blog/cmblog.nsf/dx/ibm-sametime-hits-the-ios-app-store
One detail to note is the requirement for a specific fix pack on your Sametime servers:
"The IBM Sametime Mobile Client for iOS devices requires the Sametime 8.5.2 IFR 1 Proxy Server to be deployed in your infrastructure environment. Please contact your IT department to validate this is the case."
Let's see...