SharePoint 2013 brings a lot of new capabilities and enhanced functionalities such as new XSP (Cross Site Publishing), Image and Video rendition, Friendly URLs, Content Search Web part and tight integration with Search and Managed Metadata service applications outline in this TechNet article.
Anyone involved with Content Deployment planning and deployment in MOSS 2007 and SharePoint 2010 should also find this new CD enhancement very handy :)
Content Deployment Source is a new feature in SharePoint 2013 which enables content deployment specific checks on source site collection and enables setting up content deployment from the site collection to a target site collection.
To enable this capability all you need to do is to: