Preparing DITA Source Documents : DITA 1.2 Support
 
DITA 1.2 Support
 
Keyref elements
Conref extensions
New Document Type Definitions
Starting with version 2011.2, ePublisher includes support for the DITA 1.2 standard. For information on the complete set of DITA 1.2 topic types, elements, attributes, and other specifications you may want to visit:
http://www.webworks.com/Documentation/DITA_1.2_Specification.