Bitcoin Core 30.0 changes its default handling of data-carrier outputs. Its release notes describe a larger default datacarriersize setting and support for multiple OP_RETURN outputs in a transaction.
The limit applies across those outputs together. The notes also explain how an operator can configure a different limit. These are details of the software’s relay and block-template policies, which should not be confused with a statement that every node follows identical local settings.
The same release moves version 27.x and older versions to end of life. The official documentation records the broader changes and their technical context. This brief covers that published release, rather than presenting an older version as the current installation choice.