Windows Update Services (WUS) is the new name for the next version of the update management solution currently known as Software Update Services (SUS). Windows Update Services will support updating Windows®, Office, SQL Server, and other Microsoft products and will provide significantly expanded capabilities over SUS.
Available as a free add-on, WUS is the update management component of Windows Server. It benefits IT organizations by helping to automate the update management process and by reducing the amount of time, effort, cost, and risk associated with the process.
Microsoft will launch an Open Evaluation Program later this year for Windows Update Services. Register to get information about participating in the program when it is launched.
News source: Microsoft PressPass