Google Cloud launches date-based multi-versioning for Compute Engine API

[Google Cloud] Google Cloud said API multi-versioning for Compute Engine is now generally available, letting customers adopt modern API semantics while preserving the stability of the /v1 API. According to Google Cloud, stable versions use YYYY-MM-DD identifiers and ship on a quarterly cadence, starting with 2026-09-01; each is a locked, point-in-time contract that receives no breaking changes after publication and has no end-of-support date today. Preview versions, named YYYY-MM-DD-preview, branch from a stable parent and carry a one-year lifespan. The /v1 API remains fully supported and is the default when no date-based version is specified, so existing applications continue to work without modification, Google Cloud said. Users select a version via the X-Goog-Api-Version HTTP header or the $apiVersion query parameter, while resource URIs keep the /compute/v1/ base path.