When I click on an item in the timeline, a Notify event is triggered, and the Id of the item is given in the message. However, is there any way of getting information when an item is edited in the timeline? Or can I somehow use the Id provided in the notification message to access the internal state of the item (to access modified start/end times, group Ids etc.)?

If this feature doesn't yet exist, somethine along these lines would make the timeline extremely powerful for graphically editing scheduling data in the database.