Some documentation has been posted on the Internet regarding the upcoming release of Communications Server 14.  If you want to take a look you can see it here:
http://office.microsoft.com/client/helphome.aspx?lcid=1033&NS=COMM14&Version=14

A lot of it is filler for now, but there is a little bit of content there, and it’s growing every day.

If you want to get a sneak peek, here is some information about the Communications Server 2010 Attendant:
http://office.microsoft.com/en-us/communicator-help/work-smart-microsoft-communications-server-2010-attendant-essentials-HA101888994.aspx?CTT=1

and
http://office.microsoft.com/en-us/communicator-help/quick-start-microsoft-communications-server-2010-attendant-HA101888974.aspx?CTT=1

Also, the Microsoft Communicator 2010 Attendee has been released for quite a while and you can get that here:
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=1772a5ad-9688-4861-8387-ec30411bf455

This is the public beta version. 

I will release more info as it becomes publicly available!