Merge pull request #2260 from jmartisk/release-3.15.4

3.15.4 release announcement

Author: jmartisk

_posts/2025-03-18-quarkus-3-15-4-released.adoc

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+---
+layout: post
+title: 'Quarkus 3.15.4 released - LTS maintenance release'
+date: 2025-03-18
+tags: release
+synopsis: 'We released Quarkus 3.15.4, the next maintenance release for the 3.15 LTS stream.'
+author: jmartisk
+---
+
+Today, we released Quarkus 3.15.4, our next maintenance release for the 3.15 LTS stream.
+
+This release contains bugfixes and documentation improvements.
+
+It should be a safe upgrade for anyone already using 3.15. However, as part of fixing a security issue,
+one small potentially breaking change had to be applied: https://github.com/quarkusio/quarkus/pull/45877[#45877].
+This may affect you if you consume Netty allocator metrics.
+
+== Update
+
+To update to Quarkus 3.15, we recommend updating to the latest version of the Quarkus CLI and run:
+
+[source,bash]
+----
+quarkus update --stream=3.15
+----
+
+Note that `quarkus update` can update your applications from any version of Quarkus (including 2.x) to Quarkus 3.15.
+
+== Full changelog
+
+You can get https://github.com/quarkusio/quarkus/releases/tag/3.15.4[the full changelog of 3.15.4 on GitHub].
+
+== Come Join Us
+
+We value your feedback a lot so please report bugs, ask for improvements... Let's build something great together!
+
+If you are a Quarkus user or just curious, don't be shy and join our welcoming community:
+
+ * provide feedback on https://github.com/quarkusio/quarkus/issues[GitHub];
+ * craft some code and https://github.com/quarkusio/quarkus/pulls[push a PR];
+ * discuss with us on https://quarkusio.zulipchat.com/[Zulip] and on the https://groups.google.com/d/forum/quarkus-dev[mailing list];
+ * ask your questions on https://stackoverflow.com/questions/tagged/quarkus[Stack Overflow].