An application that is compatible with the Apple Newsstand will be featured in the Newsstand section of the readers iDevice, however to ensure that the latest issue thumbnail is visible on the Newsstand publishers must update this when the publication is released via iTunes Connect.
To update Newsstand, first login to iTunesconnect.apple.com
Select manage your apps
Select the app icon you would like to work on.
Click Manage Newsstand
Click Add New Issue
The following screen allows you to edit a number of options which have been outlined below, along with best practices:
Published & End Date - This is the date that the issue will appear and be removed, however in this instance set Published Date to Now, along with an End Date of None.
Issue ID - The issue ID needs to be the Node ID of the publication (CLICK HERE for a guide on how to find your Node ID).
Summary - This is a brief description of the digital publication, and does not have to be any more than the Issue ID, however this can be utilised to describe the content of the publication to end readers.
Issue Cover Art - Best using the front cover as the issue cover art, this needs to be an image at least 1024px high and preferably in PNG format.
Once complete hit Submit to add your publication as the latest issue to Newsstand and update the front cover of the application.