This document provides an overview of Fedora 4 including its goals, features, and roadmap. The key points are: - Fedora 4 aims to improve performance, support flexible storage options, research data management, linked open data, and be an improved platform for developers. - Fedora 4 beta was released in 2014 and featured the same capabilities as the upcoming production release. Acceptance testing, beta pilots, and community feedback will inform the production release. - Fedora 4 highlights include content modeling, authorization, versioning, scaling to large files and objects, integrated and external search, and linked data/RDF support.