In the area of real time systems, RTSS is recognized world-wide as the flagship conference, presenting innovations in the field with respect to theory and practice. RTSS provides a forum for the presentation of high-quality, original research covering all aspects of real-time systems theory, design, analysis, implementation, evaluation, and experiences. This year, RTSS will be held in Porto, with Eduardo Tovar, director of CISTER, and Luís Almeida, Professor at the University of Porto, serving as local arrangements chairs. Also, two CISTER researchers, Eduardo Tovar and Vincent Nelis, have been invited to serve as PC members. This year again, the number and quality of the papers submitted and the low acceptance ratio of the conference suggests a very successful top-ranked scientific event.