⭐ New features

Add support for MongoDB as JobRepository #877
Introduce a resourceless job repository implementation #4679
Add adapters for Java functional interfaces #4672
Add ability to customize the job parameters converter in the default batch configuration #4650
Add CompositeItemReader analogous to CompositeItemWriter and CompositeItemProcessor #757
Allow dependent steps to start concurrently #2044
Add blocking queue item reader/writer to enable implementing the staged event-driven architecture in batch jobs #2350
Add support for data classes in JdbcCursorItemReaderBuilder & JdbcPagingItemReaderBuilder #4578
Add support for query hints in JPA item readers #4479
Add possibility to configure line separator in RecursiveCollectionLineAggregator #4594
Add JobRegistrySmartInitializingSingleton #4521
Add DatabaseType POSTGRES for the product name EnterpriseDB #4627
Revisit the mechanism of job registration #4547

🐞 Bug fixes

Incorrect bean configuration in DefaultBatchConfiguration #4543
BeanPostProcessorChecker.postProcessAfterInitialization WARNING after upgrade spring-framework-6.1.0 #4489
Possible duplicate state transitions in flow definition #3674
Order of Transition Elements Still Does Not completely adhere to documentation #3996
Memory leak in MessageChannelPartitionHandler when polling the database #4598
ListItemWriter<T>::getWrittenItems has bad wildcard return type #4576
SimpleBinaryBufferedReaderFactory misses line endings #811
StepExecution.getEndTime() returns null in StepExecutionListener.afterStep() #3846
Default value for ignoreWarnings in JdbcCursorItemReaderBuilder does not align with documentation #4570
Remote partitioning doesn't work if you're using graalvm #4564
SystemCommandTasklet does not propagate errors #4483
Incorrect Chunk property value in implementation of ItemWriter write method #4560
Incorrect step configuration when setting the taskExecutor before faultTolerant() #4438
Incorrect deprecation in MongoPagingItemReader #4552
JobRepository.deleteJobInstance() Fails with Foreign Key Constraint Violation if Job Executions have Step Executions #4382
DefaultJobParametersConverter throws java.lang.ArrayIndexOutOfBoundsException if input is empty string #4505
Wrong column types in JdbcStepExecutionDao #4648
MongoStepExecutionDao returns an different stepExecution if a job has multiple steps spring-projects-experimental/spring-batch-experimental/issues/3

Bad performance of GET_LAST_STEP_EXECUTION query on DB2 with large STEP_EXECUTION table #4657
Use Threadlocal.remove() instead of Threadlocal.set(null) #4601
Performance issue in DefaultFieldSet due to the usage of SimpleDateFormat #1694
Improve Error Messages in JobParametersBuilder methods #4581
Implement jumpToItem in JsonItemReader #4557
Maintain similar ordering of elements between DefaultStateTransitionComparator and FlowJobBuilder #4527
Avoid collection copying #4553
Make util classes to follow code style guide #4545
Use annotation @Override consistently #4512
Check dirty flag of step execution context before update in inner loop #4503
Missing @FunctionalInterface in JobKeyGenerator #4613
Proper default value for skipLimit #4661

Flow order priority does not match documented behavior #4456
Incorrect link to batch reference documentation on project page #4637
Typo in architecture doc #4607
Grammatical error in restart.adoc #4600
Incorrect link in appendix #4595
Missing information about error handling in ChunkListeners #4384
Improve Javadoc regarding the sort order in RepositoryItemReader #4462
Fix code sample that uses deprecated StepBuilderFactory #4582
Misleading documentation on ItemWriteListener #4400
Incorrect code example in documentation #4550
Reference Documentation Uses Deprecated Class StepExecutionListenerSupport #4538
Incorrect Type of getter in Documentation for JobParameters#getDouble #4526
UI Aligment Issue - Spring Batch Version Number in Docs #4534
Missing documentation about MultiResourceItemWriter not creating empty files when no data goes through delegates #4645
Typo in the documentation chapter Spring Batch Integration #4649

Many thanks to all contributors who worked on this release!