First, the Scheduling page has been reworked to make it easier to delete multiple scheduled activities (refreshes and report deliveries) at the same time. We'll be gradually moving many of our standard grid displays over to this newer model.
Second, several data source types which previously didn't show up as options for setting up refreshes should now. This includes JSON, flat files configured to pull from remote URLs, database connections, and certain configurations of FreshBooks, Salesforce, and Quickbase.
