The DPS team did a lot of infrastructure work, so the v21 release isn't nearly as robust as some earlier releases. Here's a list that I'll push live later today:
Viewer Version control
When you create a new folio using the v21 Folio Builder panel, you can target either the v20 or v21 viewer version. This option is especially useful if either the newest version of the Adobe Content Viewer is awaiting approval or if you’re creating folios for a v20 viewer app. If you create a v20 folio, you can edit the folio’s properties to update it to v21. However, you cannot roll back a v21 folio to v20. You cannot specify a viewer version earlier than v20.
Preview on Device for active layout (iOS)
Before v21, Preview on Device was available only for entire folios. With v21, you can now use Preview on Device in the Folio Overlays panel to preview the current layout (iOS only). Connect your iPad or iPhone to your computer and open the Adobe Content Viewer app. In the Folio Overlays panel, choose Preview on [device name].
Social Sharing improvements
Several Social Sharing limitations have been addressed. Nested overlays, buttons, videos, HTML articles, and scrollable frames now work much better in the Web Viewer. In addition, the Web Viewer now displays articles marked as Advertisement or Hide from TOC properly.
You can use the Account Administration tool to turn off Web Viewer while still enabling social sharing through the iPad.
Auto-view during folio download
When the Download or Buy button is tapped in the viewer library, the viewer displays the folio while remaining articles continue to download. Before this release, the View button became active during download, but the user had to tap it to begin viewing the folio.
Auto-download after successful subscription
When a user successfully subscribes to a viewer app, the most recent folio begins downloading automatically. Users no longer need to tap the Download button.
