Update docs

spring-batch-docs/asciidoc/header/index-header.adoc

@@ -1,3 +1,3 @@
 = Spring Batch - Reference Documentation
 
-:batch-asciidoc: https://docs.spring.io/spring-batch/reference/html/
+:batch-asciidoc: https://docs.spring.io/spring-batch/docs/current/reference/html/

spring-batch-docs/asciidoc/job.adoc

@@ -1612,7 +1612,7 @@ If you set the table prefix on the job repository, don't forget to set it on the
 
 Most of the methods on `JobOperator` are
       self-explanatory, and more detailed explanations can be found on the
-      link:$$https://docs.spring.io/spring-batch/apidocs/org/springframework/batch/core/launch/JobOperator.html$$[javadoc of the interface]. However, the
+      link:$$https://docs.spring.io/spring-batch/docs/current/api/org/springframework/batch/core/launch/JobOperator.html$$[javadoc of the interface]. However, the
       `startNextInstance` method is worth noting. This
       method will always start a new instance of a Job.
       This can be extremely useful if there are serious issues in a

spring-batch-docs/asciidoc/spring-batch-integration.adoc

@@ -936,7 +936,7 @@ configured `SimpleChunkProcessor`, which is where you would provide a reference
 when it receives chunks from the manager.
 
 For more information, see the section of the "Scalability" chapter on
-link:$$https://docs.spring.io/spring-batch/reference/html/scalability.html#remoteChunking$$[Remote Chunking].
+link:$$https://docs.spring.io/spring-batch/docs/current/reference/html/scalability.html#remoteChunking$$[Remote Chunking].
 
 Starting from version 4.1, Spring Batch Integration introduces the `@EnableBatchIntegration`
 annotation that can be used to simplify a remote chunking setup. This annotation provides

spring-batch-docs/asciidoc/testing.adoc

@@ -394,4 +394,4 @@ public void testAfterStep() {
 The preceding method for creating a simple
     `StepExecution` is just one convenience method
     available within the factory. A full method listing can be found in its
-    link:$$https://docs.spring.io/spring-batch/apidocs/org/springframework/batch/test/MetaDataInstanceFactory.html$$[Javadoc].
+    link:$$https://docs.spring.io/spring-batch/docs/current/api/org/springframework/batch/test/MetaDataInstanceFactory.html$$[Javadoc].

spring-batch-docs/asciidoc/whatsnew.adoc

@@ -4,44 +4,6 @@
 
 [[whatsNew]]
 
-== What's New in Spring Batch 4.2
+== What's New in Spring Batch 4.3
 
-Spring Batch 4.2 adds the following features:
-
-* Support for batch metrics with https://micrometer.io[Micrometer]
-* Support for reading/writing data from/to https://kafka.apache.org[Apache Kafka] topics
-* Support for reading/writing data from/to https://avro.apache.org[Apache Avro] resources
-* Improved documentation
-
-[[whatsNewMetrics]]
-=== Batch metrics with Micrometer
-
-This release introduces a new feature that lets you monitor your batch jobs
-by using Micrometer. By default, Spring Batch collects metrics (such as job duration,
-step duration, item read and write throughput, and others) and registers them in Micrometer's
-global metrics registry under the `spring.batch` prefix.
-These metrics can be sent to any https://micrometer.io/docs/concepts#_supported_monitoring_systems[monitoring system]
-supported by Micrometer.
-
-For more details about this feature, please refer to the
-<<monitoring-and-metrics.adoc#monitoring-and-metrics,Monitoring and metrics>> chapter.
-
-[[whatsNewKafka]]
-=== Apache Kafka item reader/writer
-
-This release adds a new `KafkaItemReader` and `KafkaItemWriter` to read data from and
-write it to Kafka topics. For more details about these new components, please refer
-to the https://docs.spring.io/spring-batch/4.2.x/api/index.html[Javadoc].
-
-[[whatsNewAvro]]
-=== Apache Avro item reader/writer
-
-This release adds a new `AvroItemReader` and `AvroItemWriter` to read data from and
-write it to Avro resources. For more details about these new components, please refer
-to the https://docs.spring.io/spring-batch/4.2.x/api/index.html[Javadoc].
-
-[[whatsNewDocs]]
-=== Documentation updates
-
-The reference documentation has been updated to match the same style as other
-Spring projects.
+TDB