Apple added Intelligent Assistant to Pages, Keynote, and Numbers. It helps with document drafts, slides and presenter notes, formulas, and charts, and is a US English beta for Creator Studio subscribers with supported operating systems. Keynote also added the .keyx interchange format for all users. Shortly after the update, however, the apps temporarily disappeared from the App Store. At the time of follow-up reporting, Mac versions had returned without a new update, while an iOS return had not been confirmed. With no explanation from the company, the announced features cannot be assumed to be available on every device now.