This post describes an extensibility support available in RemoteApp and Desktop Connection Management service, and how third parties (Enterprises or ISVs) can leverage it to publish any resources (RDP or non-RDP) in Windows Server 2008 R2. RemoteApp and Desktop Connection Management service, part of RD Connection Broker role service, is a new publishing feature in R2. By default, following three plug-ins are provided: LegacyTS plug-in: Aggregates RemoteApp programs from Remote Desktop Session Host servers, VMFarm plug-in: Aggregates virtual desktop pools, MyDesktop plug-in: Provides the user with the assigned personal domain desktop. All three plug-ins provide only RDP files, in following scenarios: RDP files for RemoteApp programs, RDP files for virtual desktops in virtual desktop pools, RDP files for per-user assigned virtual desktops

Full Article: RDS blog