SAFe® 6 provides a framework for scaling Agile development to the enterprise level. It Includes guidance on applying Agile practices to large, complex projects. It focuses on Lean-Agile principles and practices and provides
a holistic approach to Agile development, including guidance on product development, program execution, and portfolio management
Whereas SAFe® 6 builds on the foundation of SAFe® 6, with additional features and improvements. This includes an updated Big Picture (now at version 6) and provides new guidance for operational and development value streams to better support organizing around value. Moreover, it introduces Agile Release Train (ART) and Team Topologies, patterns for organizing teams and ARTs to improve the flow, and includes new
guidance on DevSecOps technical skills and tools that drive the Continuous Delivery Pipeline. SAFe® 6 introduces Integrated Participatory Budgeting, a collaborative and dynamic process for allocating funding to value streams, and offers additional guidance on applying Lean-Agile practices to business and technology domains, including a new SAFe® for Hardware article
In summary, SAFe® 6 is an updated version of SAFe® 6 that provides new features and improvements to help organizations better apply Agile practices to enterprise-level development.