As you know Windows Embedded Standard 7 is a componentized version of Windows 7. it comes with tools enabling OEMs to generate their own optimized Windows 7 based OS for devices.

Being based on Windows 7 allows for leveraging all the goodness of Windows 7, and as the first Service Pack for Windows 7 is on its way, embedded OEMs will be able to add it to their Windows Embedded Standard 7 images.

You can read this article on the Windows Embedded Standard team blog and visit the Windows Embedded web site SP1 page to learn more and to access the preview.