If you sync your classes to Google Calendar with attendee details turned on, those events now read more clearly and sync more reliably.
- The event description now lists the names of everyone booked into the class, below the vacancy and attendee count lines.
- Attendees are no longer added as guests on the calendar event itself, so calendars covering all your classes no longer run into Google's limits and stop updating.
- Online meeting classes are unchanged: attendees are still added as real guests, because that is what gives them access to the meeting.