The programme for the next Summer School will be available late January/early February. When the programme is published and registration opens, a message will be sent to everyone on the mailing list (persons who have registered and participants in former Summer Schools). [Subscribe to the e-mailing list to receive to receive the announcement]
Although the programme varies from year to year, most courses are usually repeated every second or third year. An exception is the Structural Equations Modelling workshops running every year, and recently a workshop or two that were in high demand. A look at the previous Summer School programmes will give you a general idea of the kind of workshops offered.