What's new in Microsoft Dynamics NAV 2015? 8 October 2014 Microsoft Dynamics NAV 2015 has been released last week. We have taken the latest version under the microscope and caught the biggest changes together in a What's New video. The latest version of NAV offers several functional enhancements, focusing on cash management, unified international bank integration and telebanking. The greatest improvements, however, have been made in terms of the usability of the application.