Concordia releases the class schedule for the following academic year in late February/early March.
You can find the latest information from Concordia about the class schedule here: https://www.concordia.ca/students/registration/class-schedule.html
Once the course offerings are confirmed by Concordia, the course catalogue on eConcordia will be updated shortly after. If there is a particular eConcordia course you are interested in you can also try contacting the department that offers that course to see if they plan to offer it on eConcordia in coming semesters.