The stable dialect URI identifies a schema as using the latest version of the standard dialect. What schema this URI identifies depends on what the implementation supports. Generally, the implementation will associate the stable URI with the meta-schema for the latest release they support. However, implementations may use a custom meta-schema that better represents what it supports. For example, if the implementation supports all of 2024 and some of 2025, they might want to use a custom meta-schema that includes only the 2025 keywords they support.