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release notes for 1.2.0-M1 #1756

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release notes for 1.2.0-M1 #1756

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1 change: 1 addition & 0 deletions docs/src/main/paradox/release-notes/index.md
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* [1.2 Releases](releases-1.2.md)
* [1.1 Releases](releases-1.1.md)
* [1.0 Releases](releases-1.0.md)

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# Release Notes (1.2.x)

Apache Pekko 1.2.x releases support Java 8 and above.

## 1.2.0-M1

Pekko 1.2.0-M1 has some new features, performance updates and dependency upgrades. See the [GitHub Milestone](https://github.com/apache/pekko/milestone/6?closed=1) for a fuller list of changes.

This is milestone release and is aimed at testing some new changes. It is expected that there will be at least one more milestone before a full release. This release should ideally be used in production.

### Bug Fixes

* Fix a leak in FlatMapPrefix operator ([PR1622](https://github.com/apache/pekko/pull/1622))
* Fix a leak in PrefixAndTail operator ([PR1623](https://github.com/apache/pekko/pull/1623))
* Fix occasional ordering issue in FlowWithContext#unsafeOptionalDataVia ([PR1681](https://github.com/apache/pekko/pull/1681))
* Add the missing EmptySource case to TraversalBuilder ([PR1743](https://github.com/apache/pekko/pull/1743))

### Additions

* add non-default config that allows InboundQuarantineCheck to ignore 'harmless' quarantine events ([PR1555](https://github.com/apache/pekko/pull/1555))
* New Sink.none operator ([PR1614](https://github.com/apache/pekko/pull/1614))
* Add overridden duration timeout to StreamTestKit ([PR1648](https://github.com/apache/pekko/pull/1648))
* Add Identity function to Java DSL ([PR1671](https://github.com/apache/pekko/pull/1671))
* Add support for controlling the NettyTransport's byteBuf allocator type ([PR1707](https://github.com/apache/pekko/pull/1707))

### Changes

* Make flatMapPrefix javadsl using java.util.List ([PR271](https://github.com/apache/pekko/pull/271))
* Add SchedulerTask which will be notified once cancelled ([PR1593](https://github.com/apache/pekko/pull/1593))
* Reduce loops when cleaning queue in BroadcastHub ([PR1628](https://github.com/apache/pekko/pull/1628))
* Avoid calling finalizeStage more times than once ([PR1650](https://github.com/apache/pekko/pull/1650))
* avoid boxing in zipWithIndex and fix type signature in SubSource#zipWithIndex ([PR1669](https://github.com/apache/pekko/pull/1669))
* Avoid forwarding method on ArrayDequeue in stream module ([PR1687](https://github.com/apache/pekko/pull/1687))
* Avoid forwarding method on ArrayDequeue in BatchingExecutor ([PR1688](https://github.com/apache/pekko/pull/1688))
* Enhance virtual thread support ([PR1724](https://github.com/apache/pekko/pull/1724))
* Add LoadMetrics support for virtual thread executor ([PR1734](https://github.com/apache/pekko/pull/1734))

### Dependency Changes

* jackson 2.18.2 - it is recommended for users to uptake jackson 2.18.3 when it is released due to some bug fixes ([PR1556](https://github.com/apache/pekko/pull/1556))
* netty 4.1.117.Final
* protobuf-java to 3.25.6 ([PR1748](https://github.com/apache/pekko/pull/1748))
* scala 2.12.20, 2.13.16, 3.3.5