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raboof merged 1 commit into from
Dec 9, 2025
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Release notes for 2.0.0-M1 #2532

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1 change: 1 addition & 0 deletions docs/src/main/paradox/release-notes/index.md
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* [2.0 Milestone Releases](releases-2.0.md)
* [1.3 Releases](releases-1.3.md)
* [1.2 Releases](releases-1.2.md)
* [1.1 Releases](releases-1.1.md)
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18 changes: 18 additions & 0 deletions docs/src/main/paradox/release-notes/releases-2.0.md
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# Release Notes (2.0.x)

Apache Pekko 2.0.x releases support Java 17 and above.

## 2.0.0-M1

This is milestone release and is aimed at testing this new major version
by early adopters. This is experimental. This release should not be used in production.

### Main changes

* Java 17 is the new minimum
* Scala 2.12 support dropped
* A lot of deprecated code removed
* A lot of pekko.util classes for Scala version compatibility have been removed
* Big change for all Java DSL users due to the removal of `pekko.japi.Function` (and related classes) to use `pekko.japi.function.Function` instead (lambdas should recompile ok but if you declared variables or functions explicitly, then you may need to change your imports)
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@pjfanning pjfanning Dec 3, 2025

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A couple of additional changes that we can mention.

  • New pekko-serialization-jackson3 lib. Users who are happy with the pekko-serialization-jackson, which uses Jackson 2, can stick with that lib.
  • Changed the pekko-serialization-jackson lz4-java dependency to at.yawk.lz4:lz4-java, a fork that has important bug fixes.

* New pekko-serialization-jackson3. Users who are happy with the pekko-serialization-jackson, which uses Jackson 2, can stick with that
* Changed the pekko-serialization-jackson lz4-java dependency to `at.yawk.lz4:lz4-java`, a fork that has important bugfixes