Just got a press release from D-link saying the DSM-750 is now shipping. I actually thought the unit was already shipping but I must have been wrong :)

A lot of people have been impressed with the D-link Extender as it seems to have better performance than some of the other, I can't say I could tell any difference when I saw it at CES but I didn't get to compare them back to back. One good feature that the D-link has is it has MediaLounge player built which will stream content from XP so you could use it with XP until you get on to Vista Media Center. Shame the availability is US only

D-LINK NOW SHIPPING HD EXTENDER FOR
WINDOWS MEDIA CENTER

MediaLounge® Player Extends Windows Media Center Experience to TVs Throughout the House; Plays and Displays Music,
Photos, Movies, Online Content and Live/Recorded TV

FOUNTAIN VALLEY, Calif., May 07, 2008 - D-Link today began shipping its latest MediaLounge® media Player designed to operate as an Extender for Windows Media Center.
The D-Link® DSM-750 provides high-speed wired or Wi-Fi streaming and sharing of High-Definition (HD) and standard definition video, movies, digital photos and music - virtually anywhere in the home, regardless of where the PC is located. Media files can be found by the DSM-750 from PCs or storage boxes (such as the D-Link DNS-323) connected to the home network and then played on the TV using the included remote control.
"The DSM-750 is our most powerful media player yet," said Daniel Kelley, senior director of marketing for D-Link Systems, Inc. "This powerful Extender for Windows Media Center not only provides an elegant way to enjoy your local media, but changes the way we navigate and view the Internet, offering content from more than 15 different providers - including sports, movies and other entertainment. When paired with PCs running Windows Media Center, the DSM-750 offers consumers the ultimate experience in digital home entertainment."
The newest MediaLounge model features the company's award-winning Wireless N  technology for the fastest Wi-Fi performance on the market, incorporating both the 2.4GHz and 5GHz radio bands available with the draft 802.11n standard to optimize the experience of moving media throughout the home.
Other key features of the new MediaLounge player include cool, silent operation (no moving parts), a convenient remote control, an easy-to-navigate TV user interface for quick hassle-free browsing of digital content, high-definition video playback with digital surround sound, a USB 2.0 port to play media stored on a thumb drive or other USB-connected storage device and 10/100 Fast Ethernet connectivity.
The DSM-750 delivers the Windows Media Center experience independent of whether the host PC is being used for other uses, so you can watch a recorded TV show in the living room while your child does homework on the PC. In addition, up to five media players can be used to extend Windows Media Center simultaneously from the same PC to enjoy music in the kitchen, a photo slideshow in the bedroom, etc.
Windows Media Center makes it easy to access all media files - video, music and photos - and to use the PC as a TV tuner/digital video recorder (DVR). Windows Media Center offers online content to users from more than 15 providers accessible in the United States alone through the DSM-750.
In addition to the Extender for Windows Media Center functionality which requires Windows Vista Home Premium or Windows Vista Ultimate, the DSM-750 also works with standard Windows Vista and Windows XP computers through Microsoft's Windows Media Player 11 or Windows Media Connect and other Universal Plug and Play (UpnP) media servers.
Media players like the DSM-750 using draft 802.11n technology allow the motion picture industry to get closer to its goal of allowing consumers to download movies directly from the studios and watch them on their TVs, according to industry research firm JupiterResearch
Pricing and Availability
       The DSM-750, with a manufacturer's suggested retail price (MSRP) of $329.99, is available now through D-Link's wide network of retailers, online resellers and D-Link's own online store, www.dlinkshop.com.
About D-Link
D-Link is the global leader in connectivity for small, medium and large enterprise business networking. The company is an award-winning designer, developer and manufacturer of networking, broadband, digital electronics, voice, data and video communications solutions for the digital home, Small Office/Home Office (SOHO), Small to Medium Business (SMB), and Workgroup to Enterprise environments.  With millions of networking and connectivity products manufactured and shipped, D-Link is a dominant market participant and price/performance leader in the networking and communications market. D-Link Systems, Inc. headquarters are located at 17595 Mt. Herrmann Street, Fountain Valley, Calif., 92708. Phone (800) 326-1688 or (714) 885-6000; FAX (866) 743-4905; Internet www.dlink.com.