Well, in terms of the new functionality, not much. However, the 2012 release is significant enough to be the base for future, small improvements.
Performance improvements in SQL Server 2014 affect SSIS as well. Enhanced, in-memory OLTP (Hekaton); improved resiliency; and updatable, clustered columnstore indexes all have an impact on processing SSIS packages.
Integration with non-Microsoft sources will continue, and one of the most important initiatives is working with Hadoop, and releasing solutions based on Microsoft Hadoop for Windows, now called MS HDInsight Server.
And finally, there is a promise to include SSIS and other BI templates in Visual Studio 2013.