tl;dr: EDG's C++ front end—a 30-year-old proprietary source-to-source compiler engine used across the industry—went open source on September 30, 2026, with The C++ Alliance (also fiscal sponsor of Boost) taking over as its nonprofit steward. Development will proceed on three tracks: community pull requests, Alliance-funded maintenance (published immediately), and collectively funded larger features, all landing in the same public repo at github.com/edgcpp/compiler with no early access. John Spicer continues as the point of contact, chairing the Fiscal Sponsorship Committee that oversees contributions and priorities.