:green_book: Links

• Spring Data MongoDB 4.0 Reference documentation
• Spring Data MongoDB 4.0 Javadoc

:star: New Features

• Skip output for @Aggregation query methods using $out or void methods #4088

:lady_beetle: Bug Fixes

• Issue with AOT and Kotlin data class: The following must be non-sealed interfaces #4351
• Package private visibility of ConversionContext prevents subclassing of MappingMongoConverter #4345
• ParameterBindingJsonReader fails with NPE when a bindable value for ObjectId parameter is null #4282

:hammer: Dependency Upgrades

• Upgrade to Maven Wrapper 3.9.1 #4357