Seamless windows comes to Windows Terminal Server
One of the big plus factirs for Citrix Presentation Server has always been support for seamless windows, well longhorn server will have a simillar capability:
Remote Programs are programs that are accessed remotely through Terminal Services and behave as if they are running on the end user’s local computer. Users can run Remote Programs side-by-side with their local programs. If a user is running more than one remote program on the same terminal server, Remote Programs will share the same Terminal Services. For Beta 1, in order to enable Remote Programs you will need to create and distribute an .rdp file.
Check out the attachment for more details