Version 15 SP1 is available from xerox.com now (released the 10th of April). There is no updated Release notes yet. The documentation still says Adobe CC 2015 but the Read me text file in the installer have this text:
VI Design Express (VDE) is an easy to use application plug-in for use with Adobe InDesign CS5.5, InDesign CS6, InDesign CC 2015, and InDesign CC 2017 and Xerox VIPP-enabled production print devices.
