Research in software evolution and evolvability has been thriving in the past years, with a constant stream of new formalisms, tools, techniques, and development methodologies trying, on the one hand, to facilitate the way long-lived successful software systems can be changed in order to cope with demands from users and the increasing complexity and volatility of the contexts in which such systems operate, and, on the other hand, to understand and if possible control the processes by which demand for these changes come about. In 2013, IWPSE-EVOL will be co-located with ESEC/FSE, in late August in Saint Petersburg, Russia. Proceedings of the workshop will be published in the ACM digital library.