Marco,
There are two expiry dates:
1. PMI requires that we stop providing access to the PrepCast Sixth Edition once PMBOK Seventh Edition is officially used for the next exam. (Sometime in 2021.)
2. Starting 2021-Jan-02 we are no longer allowed to sell The PM PrepCast for PMP exam Prep. (It is still a GOOD basic training, but it is no longer an official PMP exam prep course). To understand the details behind this, please read here:
www.project-management-prepcast.com/pmp-...date-the-pm-prepcast