The Windows Embedded Standard team (previously known as Windows XP Embedded) have been busy working on an updated Community Technology Preview (CTP) of Windows Embedded Standard (WES) - the CTP can be downloaded from the Microsoft Connect Site.

The CTP Refresh includes an improved setup experience and migration support from previous versions of Windows XP Embedded. Additionally, it now includes .NET 3.5, additional device drivers, System Center Configuration Manager (SCCM) Client Prereq Macro, and various other updates based on direct customer feedback.

Today we also posted a CTP of Service Pack 3 (SP3) for Windows XP Embedded. This is a rollup of hot fixes and security updates Microsoft has released since the RTM of Service Pack 2. SP3 also includes select out-of-band features and enhancements. SP3 provides a new baseline for customers deploying Windows XP Embedded.

Source- MSDN Blog