The Software Intensive Systems (SIS) has become dominant in industry. The Product Lines (PL) approach offers significant cost reductions in customization and rapid development of products targeting various market segments. However, Product Lines Engineering often times requires a complex modeling and coevolution of multiple assets. That hinders the proliferation of the PL approach and constrains its accessibility for SMEs and larger community of system developers. The ITEA 3 project REVaMP² aims to conceive, develop and evaluate the first comprehensive automation tool-chain and associated executable process to support round-trip engineering of SIS Product Lines and thereby helping to profitably engineer mass customized products and services.