I know we're not shipping Communications Suite 5 until March 23, but you can go ahead and grab a copy of single host deployment example now:
This deployment example describes how to install Sun Java Communications Suite 5 software on one computer for a functioning deployment. This document is intended for any evaluator, system administrator, or installation technician who wants to install and evaluate the services delivered by these components.
Now all you have to do is wait for the bits.
In the past, this example has documented how to install the Communications Channels (portlets) provided by our Portal Server product. That's a thing of the past. Looks like Portal is no longer providing these specific Comms Channels anymore, though the 'capability' to deploy these channels still exists. Heads-up to those of you who have used this out-of-the-box functionality in previous releases.