This policy setting controls whether the What's New information is shown when a user opens the desktop version of PowerPoint for the first time after PowerPoint has been updated with new features. By default, the What's New information is shown.
If you enable this policy setting, the What's New information isn't shown. Also, the What's New button in File > Account is disabled.
If you disable or don't configure this policy setting, the What's New information is shown.
Note: There are separate policy settings for Word, Excel, PowerPoint, Outlook, OneNote, and Visio.