A: The Remote Desktop Protocol (RDP) 8.0 update for Windows 7 SP1 and Windows Server 2008 R2 SP1 can be downloaded and installed from the Microsoft download site. Before installing the RDP 8.0 update, install the Datagram Transport Layer Security (DTLS) support update.
After both updates are installed, Windows 7 SP1 will have the new RDP 8.0 and RemoteFX capabilities, both as an RDP client and as an OS connected to via RDP.
See also the FAQ "Q: What versions of the Remote Desktop Protocol (RDP) client work with Windows Server 2012 Remote Desktop Services?" You might also be interested in the FAQ "Q: How do I enable Remote Desktop connections to Windows 7 using Group Policy on a Windows Server 2008 R2 domain?"