chore: announce Hiero Enterprise Java v0.20.0 release (hiero-ledger#516)

Signed-off-by: Jessica G <jwagantall@linuxfoundation.org>

Author: jwagantall

content/posts/hiero-enterprise-java-v0.20.0-release.md

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+title = "Hiero Enterprise Java – Announcing Release v0.20.0"
+featured_image = "/images/hiero-enterprise-java-0.20.0.png"
+date = 2026-06-22T00:00:00+00:00
+categories = ["Blog"]
+abstract = "The Hiero Enterprise Java project has a new release: v0.20.0."
+[[authors]]
+name = "Hiero Community"
+organization = "Hiero"
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+
+We’re excited to share the news of our first release for [**hiero-enterprise-java**](https://github.com/hiero-ledger/hiero-enterprise-java/releases)!
+
+This release marks an exciting milestone for the Hiero Enterprise Java team! It is the **first** release published under the Hiero namespace, now available in Maven under **org.hiero**.
+
+* * *
+
+## What Does This Release Include?
+
+This release introduces multiple API and framework enhancements, for example:
+- New `accountClient` capabilities add support for allowance approval, cryptocurrency transfers and account updates
+- HookStore transaction support, and Mirror Node Blocks API support across all supported frameworks.
+- On the framework side, MicroProfile now exposes `TopicClient` and `TopicRepository` as CDI beans, and topic handling has been improved with JSON parsing fixes for both Spring and MicroProfile modules.
+- Multiple correctness and reliability fixes
+- Security and operational hardening were strengthened through signing configuration fixes, protections against leaking operator private keys or OS environment variables in logs, updated workflow permissions, pinned workflows, and StepSecurity best-practice adoption.
+
+## Release Information and Artifacts?
+
+- **Repository:** hiero-ledger/hiero-enterprise-java
+- **Version:** v0.20.0
+- **Published:** June 17,2026
+- **Release URL in GitHub:** [v0.20.0](https://github.com/hiero-ledger/hiero-enterprise-java/releases/tag/v0.20.0)
+- **Release URL in Maven Central:**
+  - [hiero-enterprise-spring](https://central.sonatype.com/artifact/org.hiero/hiero-enterprise-spring)
+  - [hiero-enterprise-base](https://central.sonatype.com/artifact/org.hiero/hiero-enterprise-base)
+  - [hiero-enterprise](https://central.sonatype.com/artifact/org.hiero/hiero-enterprise)
+  - [hiero-enterprise-microprofile](https://central.sonatype.com/artifact/org.hiero/hiero-enterprise-microprofile)
+
+## Release Notes
+
+For the complete details of commits included, see the original GitHub release: [Release v0.20.0](https://github.com/hiero-ledger/hiero-enterprise-java/releases/tag/v0.20.0)
+
+## Get Involved!
+
+- Clone and take a look at the code for [hiero-enterprise-java in GitHub.](https://github.com/hiero-ledger/hiero-enterprise-java).
+- Join our [LF Decentralized Trust Discord](https://discord.com/invite/hyperledger) for real-time discussions on Hiero topics including hiero-enterprise-java.
+- Take a look at [Hiero's public calendar](https://zoom-lfx.platform.linuxfoundation.org/meetings/hiero) and join us in the next meeting. 
+- To learn more about Hiero, explore our [full content in GitHub](https://github.com/hiero-ledger).