Find out what is new in Event Streams version 12.3.x.
Release 12.3.1
Apicurio Registry version updated to 3.2.2
Event Streams 12.3.1 includes Apicurio Registry version 3.2.2 for managing schemas. For more information about client application requirements, see prerequisites.
Documentation: Highlighting differences between versions
Any difference in features or behavior introduced by Event Streams 12.3.1 compared to 12.3.0 is highlighted in this documentation by using the following graphic: 
Security and bug fixes
Event Streams release 12.3.1 contains security and bug fixes.
Release 12.3.0
Geo-replication configuration simplified
In Event Streams 12.3.0 and later, you can configure geo-replication by using the Event Streams UI or CLI. You no longer need to create an EventStreamsGeoReplicator custom resource on the destination cluster before configuring geo-replication. The UI or CLI directly creates and manages KafkaMirrorMaker2 custom resources on the destination cluster instead. For more information, see planning for geo-replication.
Deprecation of the EventStreamsGeoReplicator custom resource
The EventStreamsGeoReplicator custom resource is deprecated in Event Streams 12.3.0 and later. Existing EventStreamsGeoReplicator resources continue to work but are no longer required for geo-replication.
Deprecation of v1beta2 API
The v1beta2 API is deprecated in Event Streams 12.3.0 and later, and will be removed in a future release. For more information about the deprecated fields, see upgrading.
Support for disaster recovery licensing
Event Streams 12.3.0 and later supports disaster recovery licensing with a 2:1 ratio when deployed with IBM Cloud Pak for Integration licenses. For more information, see disaster recovery licensing.
Kafka version upgraded to 4.2.0
Event Streams version 12.3.0 includes Kafka release 4.2.0, and supports the use of all Kafka interfaces.
Security and bug fixes
Event Streams release 12.3.0 contains security and bug fixes.