Calendar (alpha) now has a Subscribe button, giving you a calendar feed you can add to Apple Calendar, Outlook or Google Calendar. Subscribe to events, absences or resources, and the feed starts from the view and filters you already have in front of you.
The Outline tab on an Event now shows your sessions in a single list view. The Students column is now called Learner, and shows how many learners are enrolled on each session alongside the capacity still available.
Contact and Location Custom Fields are now all available on the contacts and accounts entities, so none are left out.