The ISO C++ committee wrapped up technical work on C++26 at its March 2026 London meeting, finalizing the draft standard. 210 attendees from 24 nations tackled 411 national body comments and six parallel tracks of technical work. Phil Nash of Shaved Yaks hosted the event, which included high-quality facilities and significant remote participation. The committee resolved fit-and-finish issues, completing the Fab Four core features: Reflection, enhanced memory safety, Contracts, and std::execution. Reflection is described as C++'s most transformative upgrade since templates, while memory safety improvements eliminate uninitialized variable UB and harden the standard library, reducing segfaults by 30% at Google. Contracts saw a close vote (114-12) but remain in the standard.

Adoption is expected to be rapid due to high user demand and existing production use of key features like std::execution.