You will only see this tile for applications authored with Adobe PhoneGap that leverage ContentSync to publich content to your customers.
Once you have added or modified your content through the Content Tile, you are able to push those changes out to your customers throught the Content Release Tile.
AEM - mobile allows the AEM Author to create and maintain content in AEM while simultaneously, allowing your development team make changes to your application without clobbering each others work. The AEM Author can then publish both of those changes out to your customers quickly and without needing to resubmit to the various application stores for distribution.
Publishing content is the creation of a ZIP file that contains HTML and HTML resources, for each update. Note: there is no reason why additional content should not be included for custom applications. This ZIP file only contains changes that are generated when rendering the app and is intelligent enough to package only those files that have be modified since the last update.
The Content Release tile Type column will display either 'App' to signify Application Shell content, for example framework or infrastructure of the app managed by a developer or, 'Content' which represents page content managed by the content author.
Content can be represented as a language or as a particular part of the app where multiple contentSync packages are consumed by the app. The choice of how you bundle your content is designed to be flexible and entirely up to how you want to manage content for your application.
The Status column shows when content changes are pending and a new content update is required.
The Modified column indicates when pages were most recently modified.
The Staged column shows when the last content update was created. To create a new content update and stage your changes open any record in the tile and create a new update.
The Published column shows when the last content update was published and made availble for consumption by your customers. To publish content, you must first stage that content and then publish the update by drilling into this tile and publishing from the ContentSync details console.