SoftCare today announced that K4 Publishing System 5.6 has been released. The editorial system for Adobe InDesign and Adobe InCopy has become even faster thanks to the integration of Adobe InDesign Server, notes the company. The latest release also improves integration with other systems, and provides a host of new features that help publishers boost productivity and lower production costs. The server software is available for Mac OS X Server, Windows, Sun Solaris and Linux.