Release Notes - v0.66.2

v0.66.2 (July 21, 2026)

Title: Update release tooling, node behavior, and test coverage

Date: July 21, 2026

Version: v0.66.2

This release updates the Go toolchain and several dependencies, improves Leios NtC CertRB handling, expands MySQL conformance coverage and local validation, simplifies UTXO cleanup, and keeps reward live stake queries aligned with current reward state.

Recommended Network Compatibility ⚠️

Network	Compatible
mainnet	⛔
preprod-testnet	✅
preview-testnet	✅
musashi	✅

✨ Highlights

• Updated go-cid to v0.6.2 to keep content identifier handling current.

• Improved build workflow compatibility by updating actions/setup-go to v7.0.0.

• Refined AWS credential handling by updating aws-sdk-go-v2/credentials to v1.19.29.

• Strengthened network helpers by updating golang.org/x/net to v0.57.0.

• Fixed AWS request handling by updating aws/smithy-go to v1.27.4.

• Expanded Leios NtC CertRB handling by waiting for closure, refining connection teardown, and refreshing metrics and architecture guidance.

• Expanded MySQL validation with conformance tests, Docker Compose support, CI environment support, and README updates.

• Removed UTXO cleanup order sorting to simplify state cleanup.

• Adjusted the live stake index query so reward lookups return the expected stake data.

• Recorded the v0.66.1 release entry so the release index stays complete.

Full Changelog: v0.66.1…v0.66.2