The symposium has been rescheduled due to the ongoing pandemic. It will now be held from Monday August 30th to Friday September 3rd, 2021. Furthermore, the conference will be a hybrid event, i.e., participants will have the option of attending in person or virtually. The 11th International Symposium on Topics in Coding will be held in Montréal, Canada. The symposium will be an opportunity to acquire a broad overview of the current status of advanced research in iterative information processing and its application to information theory and digital communications. IMT Atlantique is co-organizing this symposium.