Amazon Web Services released two new Aurora MySQL minor versions on November 2, 2026. Aurora MySQL 8.4.10 follows MySQL 8.4.10, and Aurora MySQL 3.14 follows MySQL 8.0.46.
Each brings community MySQL fixes plus Aurora-specific features. The 8.4 line adds GTID tags and a higher connection limit, while the 3.14 line adds post-quantum key exchange for TLS.
What Is New in Aurora MySQL 8.4.10
This release moves the Aurora MySQL 8.4 line to MySQL 8.4.10. AWS recommends upgrading to newer minor versions to pick up fixes for known CVEs in earlier MySQL releases, along with bug fixes and performance work from the community.
It also brings two Aurora-specific additions:
- Support for global transaction identifier (GTID) tags, so you can attach a user-defined tag to GTIDs and group related transactions in binary log replication.
- A limit of up to 50,000 simultaneous connections per DB instance.
What Is New in Aurora MySQL 3.14
Aurora MySQL 3.14 is compatible with MySQL 8.0.46. Besides the community fixes and some operational improvements, it introduces support for post-quantum TLS (PQ-TLS) key exchange.
That gives you post-quantum cryptography options when encrypting data in transit. AWS points to the Aurora MySQL 3 and MySQL 8.0.46 release notes for the full list of changes.
How Upgrades Work
Both versions can be applied during scheduled maintenance windows with automatic minor version upgrades. You can also upgrade in place or by restoring a snapshot into the new version.
For large fleets, AWS suggests the Upgrade Rollout Policy in AWS Organizations. It lets you roll out upgrades in phases, testing on lower-priority environments before touching the most critical clusters. Both releases are available in every AWS Region where Aurora MySQL runs.
What It Means for Developers
The higher connection ceiling matters for applications that open many short-lived connections, such as serverless functions. AWS says it can let such workloads scale without a separate pooling layer, although it still recommends reading the connection best practices in the Aurora MySQL User Guide.
GTID tags are useful for teams that need to follow specific transaction groups through replication, for example when auditing or debugging data pipelines. The PQ-TLS support is a practical first step for organizations that must plan for future quantum threats on encrypted connections.
How to Get Started
Check which Aurora MySQL version each cluster runs, then plan a test upgrade in a non-production cluster. Run your application test suite and any replication or CDC tooling against it before the production change.
If you rely on TLS, check that your client drivers and libraries work with the new key exchange before you depend on it. Read the release notes first, as minor versions can change default behavior.
Why Minor Version Upgrades Matter
Aurora applies its own engine changes on top of the community code, so each release is a combination of two streams of work. The MySQL base brings security and bug fixes, and the Aurora layer brings features that exist only on AWS.
Staying close to the latest minor version keeps you inside the supported window and reduces the size of each jump. Smaller jumps are easier to test, and they make it simpler to find the cause if a query plan or setting changes after the upgrade.
A sensible routine is to enable automatic minor version upgrades on development and staging clusters first. Production clusters can then follow a few weeks later, once your tests pass and the release notes show nothing that affects your schema or settings.
If you manage many clusters across accounts, the phased rollout policy removes much manual work. It helps you avoid a situation where one bad assumption reaches every environment on the same night.
Conclusion
Aurora MySQL 8.4.10 and 3.14 keep the service in step with community MySQL and add features aimed at scale and security. Teams on either line should schedule a test upgrade soon, mainly to receive the CVE fixes included in the new MySQL base versions.
Sources
- AWS What's New: Amazon Aurora MySQL 8.4.10 is now generally available
- AWS What's New: Amazon Aurora MySQL 3.14 (compatible with MySQL 8.0.46) is generally available
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