Note: This post consolidates and replaces three earlier Discuss posts that covered each of these breaking changes separately, each with its own effective date. Those dates have since been aligned — all three changes now take effect on August 17, 2026. Please refer to this post as the single source of truth going forward. On August 17, 2026, CircleCI is introducing three breaking changes to how configs are compiled. As part of a larger initiative to build next-generation config tooling, stricter...