Release 4.2.6

• Channel: stable
• Deployment target: production
• Published: 2026-04-12T13:02:24Z
• Release tag: v4.2.6

[4.2.6] - 2026-04-12

Customer-Facing Changes

APIs And Integrations

• Improved heartbeat response metadata.
• Added email deduplication and provider reference fallback in notification scheduling.
• Improved billing field configuration and validation in checkout settings.
• Improved invoice generation encryption and linking behavior.

Checkout And Customer Portal

• Added billing and payment localization updates for multiple languages.

Deployment And Operations

• Updated licensing endpoint error handling.

Deployment Notes

Use the updater from payment-gateway-deploy to install this release. Exact image references and digests are resolved from signed release metadata and deployment tooling instead of being duplicated in these notes.

Security Artifacts

This release was published before the current release security artifact contract was made customer-facing. Use Release Security Transparency for the current SBOM, vulnerability report, policy-result, checksum, and provenance evidence model.