The production release will be in August 2015. Intel DAAL will be included in Parallel Studio XE Professional and Cluster Editions as well as available for stand alone purchase. Pricing isn't announced yet but it will be a "per developer" license model with royalty-free distribution.
@gaston-hillar We are planning on activities for Intel DAAL at IDF San Francisco this year. These activities will likely include talks or demos. You don't have to wait until IDF to get started, though. There are already many code samples available in the current DAAL installation. You can play with these samples to quickly get familiar with the API.