The book "SDL 2007: Design for Dependable Systems" offers a comprehensive collection of contributions presented at the 13th SDL Forum in Paris. The focus is on balancing experience reports and research papers related to System Design Languages. Originally, the ITU-T specification and description language Z.100 was central to the first SDL forums, which primarily dealt with fixed network communication. However, over the past 30 years, the application of this language has significantly expanded and is now an indispensable tool for model-driven development across various industries. The book reflects developments in model-driven engineering practice and demonstrates how these approaches are increasingly necessary for designing reliable systems. Particular attention is given to a case study from Motorola, which underscores the relevance of these trends.