So why would you need Windows Embedded 2009? What can it possibly bring to Thin Clients while actually keeping them thin? Well, here's the features that are slated for Windows Embedded 2009 (I'll refrain from debating if this complies with being "thin"):

• Microsoft Silverlight. Support for Silverlight provides a cross-browser, cross-platform plug-in for delivering the next generation of media experiences and rich interactive applications (RIAs) for the Web that incorporate video, animation, interactivity and stunning user interfaces.

• .NET Framework 3.5,Internet Explorer 7 and Windows Media Player 11. Build sophisticated devices with visually compelling user experiences. Windows Embedded Standard 2009 delivers features enabling the next-generation media experiences, RIAs and stunning user interfaces — helping device makers bring innovative devices to market faster than ever, while offering unparalleled connected experiences.

• RDP 6.1 and Network Access Protection (NAP). Windows Embedded Standard 2009 provides the latest version of RDP and NAP, enabling devices to seamlessly connect to Windows Vista-based PCs and take advantage of new features in Windows Server 2008 including the latest security and management technology.

Try the Windows Embedded Standard 2009 Community Technology Preview here.