Add Temurin 23 release blog

Signed-off-by: Andrew Leonard <anleonar@redhat.com>

content/blog/eclipse-temurin-23-available/index.md

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+---
+title: Eclipse Temurin 23 Available
+date: "2024-09-20T12:00:00+00:00"
+author: pmc
+description: Adoptium is excited to announce the immediate availability of Eclipse Temurin 23.
+tags:
+  - temurin
+  - announcement
+  - release-notes
+---
+
+Adoptium is happy to announce the immediate availability of Eclipse Temurin 23+37. As always, all binaries are thoroughly tested and available free of charge without usage restrictions on a wide range of platforms. Binaries, installers, and source code are available from the [Temurin download page](https://adoptium.net/temurin/releases), [official container images](https://hub.docker.com/_/eclipse-temurin) are available at DockerHub, and [installable packages](https://adoptium.net/installation/) are available for various operating systems.
+
+## Fixes and Updates
+
+* [Temurin 23 Release Notes](https://adoptium.net/temurin/release-notes/?version=jdk-23+37), including [fixes in OpenJDK 23](https://bugs.openjdk.org/issues/?jql=project+%3D+JDK+AND+fixVersion+%3D+23)
+
+## Overview of Java 23 Features
+
+[JEP 455: Primitive Types in Patterns, instanceof, and switch (Preview)](https://openjdk.org/jeps/455)
+[JEP 466: Class-File API (Second Preview)](https://openjdk.org/jeps/466)
+[JEP 467: Markdown Documentation Comments](https://openjdk.org/jeps/467)
+[JEP 469: Vector API (Eighth Incubator)](https://openjdk.org/jeps/469)
+[JEP 473: Stream Gatherers (Second Preview)](https://openjdk.org/jeps/473)
+[JEP 471: Deprecate the Memory-Access Methods in sun.misc.Unsafe for Removal](https://openjdk.org/jeps/471)
+[JEP 474: ZGC: Generational Mode by Default](https://openjdk.org/jeps/474)
+[JEP 476: Module Import Declarations (Preview)](https://openjdk.org/jeps/476)
+[JEP 477: Implicitly Declared Classes and Instance Main Methods (Third Preview)](https://openjdk.org/jeps/477)
+[JEP 480: Structured Concurrency (Third Preview)](https://openjdk.org/jeps/480)
+[JEP 481: Scoped Values (Third Preview)](https://openjdk.org/jeps/481)
+[JEP 482: Flexible Constructor Bodies (Second Preview)](https://openjdk.org/jeps/482)
+
+For a complete list of the enhancements (including ones that only impact developers of OpenJDK), [see the JDK 23 overview over at OpenJDK](https://openjdk.org/projects/jdk/23/).
+