SharePoint 2013 Sites

The following are the new Site features in SharePoint 2013.

Feature	Description
Community Sites Template	Users can start and participate in forum threads in the Community Sites, this helps users to share information and get suggestions from other users.
Community Portal Template	New Template, offers a search option to view the list of Community sites across sites and site collections. Allows the user to find a community site and join the community.
My Sites Template	New improved UI, includes Microblog and Newsfeeds features
eDiscovery Template	Allows creating separate case templates for specific purposes. Ex: Create a new case for a new Contract. Allows users to search content from various sites and site collections, farms, Exchange servers etc and store the results of the search in the eDiscovery site. Allows the user to view the original saved version and the latest version of the artifacts, provided the artifacts get modified after the discovery is done.
Mobile - Device channels	Sites can be rendered in different formats to suite various mobile displays
Mobile - Push Notifications	Mobile devices can subscribe to receive notifications from SharePoint, Ex: Adding an item to a List. Event handling code interacts with Notification Service of the devices and sends appropriate notifications to the Mobile devices.
Mobile – BI Support	iOS 5.0 & Safari Mobile Browsers can now view Dashboards, Scorecards and Excel Services report from the Mobile devices.
Cross-Site publishing	Allows publishing content to multiple sites / site collections simultaneously.

Related Post
SharePoint 2013 Hardware and Software Requirements
SharePoint 2013 Authentication
SharePoint 2013 Sites
SharePoint 2013 Communities
SharePoint 2013 Content
SharePoint 2013 Search
SharePoint 2013 Insight
SharePoint 2013 Composites
SharePoint 2013 Claim Based Authentication
SharePoint 2013 Support for OAuth 2.0
SharePoint 2013 Distributed Cache Service