Apelon, Inc., an international provider of terminology and data interoperability solutions, is pleased to announce a major new release (4.0) of its Distributed Terminology System (DTS), the healthcare industry's leading open source terminology management platform. Based on extensive user feedback from deployments around the world, the new release features significant usability enhancements, new methods for tracking terminology changes over time, and greater integration with Java Enterprise Edition (JEE) and Software Oriented Architecture (SOA) infrastructure