A SQL 2014 Licensing Datasheet is released from Microsoft which confirms that SQL 2014 licensing is broadly as that for SQL 2012 with two changes detailed.
Firstly, licensing of a passive server for fail-over support is now an SA benefit rather than a Licence right.
And secondly, BI edition now allows “batch processing” of data without requiring CALs for the data sources supplying the data. Download the datasheet here: http://bit.ly/PfQkk3.