Comment Not revolutionary, see Sony's Portable File Server (Score 3, Informative) 220
Intel's research seems to be more of an evolutionary refinement than a new revolution in computing.
Sony's had a wireless file server PGX1 out in Japan for several months now. It's not really pocket size but doesn't take much space or add much weight in a bag at only 390g. It stores 20GB and supports CIFS, NFS and FTP connections over 802.11b. It's also dockable with a wired ethernet connection when direct access is desired. Configuration is via LCD display or web browser.
See the FSV-PGX1 at Sony's Portable File Server page for details (in Japanese of course).