PSSession = Runspace

In Powershell v2 CTP3 which is due any day now all CMDlets ending in the word -Runspace have been renamed to -PSSession.

I think this is good to remember because the powershell development team has stated repeatedly that you will be able to provide users customised or scaled down Runspaces. In a scaled down Runspace users only have access to the CMDlet provided by the administrator.