bitcoin/doc/release-notes-32406.md

• -datacarriersize is increased to 100,000 which effectively uncaps the limit (as the maximum transaction size limit will be hit first). It can be overridden with -datacarriersize=83 to revert to the limit enforced in previous versions. Both -datacarrier and -datacarriersize options have been marked as deprecated and are expected to be removed in a future release. (#32406)

• Multiple data carrier (OP_RETURN) outputs in a transaction are now permitted for relay and mining. The -datacarriersize limit applies to the aggregate size of the scriptPubKeys across all such outputs in a transaction, not including the scriptPubKey size itself. (#32406)