Design and specification language entirely interests in the field of embedded systems and Forum Language Specification and design have once again become Europe's premier event for embedded systems and chip design community. Progress in Design and Specification Languages for Embedded Systemsis recent contributions for Chip Design Languages series and consists of selected papers presented at the Forum Specification and Design Languages (FDL'06), which took place in September 2006 at the Technische Universit? Darmstadt, Germany. FDL, an ECSI conference, is Europe's premier forum for presenting research results, to exchange experiences, and learn about new trends in application and design specification language and associated design and modeling methods and tools for integrated circuits, embedded systems, and heterogeneous systems.