A few months back at the CES show in Las Vegas, Microsoft announced a new product called Windows Home Server. From a technical viewpoint, Home Server is designed to be a central computing hub in your home to help with:
Automatic backup of all Microsoft Windows XP and Windows Vista PCs on the network
Centralized storage of data and media files
Expandable disk drive capacity
Remote access to files and folders from the Internet
Today, the Windows Home Server team has announced that they're done. Home Server has now been released to manufacturing. You can read more about the details over on the Home Server blog.
I'm hoping to get my hands on one of these devices once they hit the street this fall.