• Table of contents
• Introduction
• 2.x now in maintenance mode
• Maven coordinates
• Gradle import
• Maven import
• JavaDocs
• Java 8
• Package structure
• Behavior changes
• More undeliverable errors
• undeliverable-example
• Connectable source reset
• publish-reset example
• replay-reset example
• Flowable.publish pause
• publish-pause example
• Processor.offer null-check
• offer-example
• MulticastProcessor.offer fusion-check
• Group abandonment in groupBy
• groupBy abandonment example
• Backpressure in groupBy
• groupBy backpressure example
• Window abandonment in window
• window abandonment example
• CompositeException cause generation
• stacktrace example
• Parameter validation exception change
• From-callbacks upfront cancellation
• from callback example
• Using cleanup order
• API changes
• Functional interfaces
• Wider throws
• New Types
• Supplier
• Converters
• Moved components
• Disposables
• DisposableContainer
• API promotions
• Flowable promotions
• Observable promotions
• Maybe promotions
• Single promotions
• Completable promotions
• API additions
• replay with eagerTruncate
• Flowable
• Observable
• concatMap with Scheduler
• Flowable
• Observable
• Schedulers.from fair mode
• blockingForEach with buffer size
• blockingSubscribe
• Maybe
• Single
• Completable
• Maybe.delay with delayError
• onErrorComplete
• Flowable
• Observable
• Single
• Completable.onErrorResumeWith
• retryUntil
• switchOnNext
• Maybe.dematerialize
• from conversions
• Flowable
• Observable
• Maybe
• Single
• timestamp and timeInterval
• Maybe
• Single
• toFuture
• ofType
• doOnLifecycle
• concatMap to another type
• concat with delayError
• Maybe
• Single
• Completable
• Single.mergeArray
• Completable.sequenceEqual
• startWith
• Flowable
• Observable
• Maybe
• Single
• Completable
• Completable.onErrorReturn
• safeSubscribe
• Single.flatMap
• concatEager and concatEagerDelayError
• Flowable
• Observable
• Maybe
• Single
• fromSupplier
• ParallelFlowable.flatMapIterable
• flatMapIterable example
• Java 8 additions
• Java 8 functional interfaces
• fromOptional
• fromOptional example
• fromStream
• fromStream example
• fromCompletionStage
• fromCompletionStage example
• mapOptional
• mapOptional example
• collect with Collector
• collect example
• firstStage, singleStage, lastStage
• stage examples
• firstOrErrorStage, singleOrErrorStage, lastOrErrorStage
• stage examples
• toCompletionStage
• toCompletionStage example
• blockingStream
• blockingStream example
• flatMapStream, concatMapStream
• flatMapStream example
• flattenStreamAsFlowable, flattenStreamAsObservable
• flattenStreamAs example
• API renames
• startWith
• Flowable
• Observable
• onErrorResumeNext with source
• zipIterable
• combineLatest with array argument
• Single.equals
• Maybe.flatMapSingleElement
• API signature changes
• Callable to Supplier
• Affected operators
• Maybe.defaultIfEmpty
• concatMapDelayError parameter order
• Flowable.buffer with boundary source
• Maybe.flatMapSingle
• API removals
• getValues (hot sources)
• Maybe.toSingle(T)
• subscribe(4 arguments)
• Single.toCompletable()
• Completable.blockingGet()
• test support methods
• replay with Scheduler
• dematerialize()
• onExceptionResumeNext
• buffer with boundary supplier
• combineLatest with varags
• zip with nested source
• fromFuture with scheduler
• Observable.concatMapIterable with buffer parameter
• Interoperation
• Reactive Streams
• RxJava 1.x
• RxJava 2.x
• Java 9
• Swing
• Project Loom
• Miscellaneous
• Changelog of the individual release candidates