v4.1.0-M2

⭐ New Features

• Add RENEW acknowledgment type to ShareAcknowledgment #4322
• Add error handling strategy (poll-level and listener-level) to Share consumer container #4321
• Align default behavior of @RetryableTopic and RetryTopicConfigurationBuilder with documentation #3706
• DefaultErrorHandler doesn't work with suspend methods #3618

🐞 Bug Fixes

• Listener with async acks pauses indefinitely #4332
• Observations for filtered messages are leaked, filling memory #4306
• assertTopic validation breaks meta-annotated @KafkaListener with programmatic topic resolution #4303
• With a @KafkaListener that returns a Mono, the error handler does not retry #4198

🔨 Dependency Upgrades

• Bump kotlinVersion from 2.3.10 to 2.3.20 #4354
• Bump io.projectreactor:reactor-bom from 2025.0.3 to 2025.0.4 #4350
• Bump org.springframework:spring-framework-bom from 7.0.5 to 7.0.6 #4347
• Bump org.springframework:spring-framework-bom from 7.0.4 to 7.0.5 #4308
• Upgrade to Apache Kafka 4.2.0 #4302

❤️ Contributors

Thank you to all the contributors who worked on this release:

@sobychacko