Developer changelog updates for Jun 18, 2026

Summary

Introduces multilocation canaries, enabling a single canary to run concurrently across multiple AWS regions

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Adds Intelligent Rebalancing support to all existing MSK Provisioned clusters with Express brokers at no extra cost.

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ECS service auto scaling now supports 20‑second high‑resolution metrics for faster scaling signal detection

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GA of EC2 G7 instances with up to 8 NVIDIA RTX PRO 4500 GPUs, 32 GB GPU memory, custom Intel Xeon 6 CPUs, and up to 700 Gbps EFA bandwidth

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Adds private networking connectivity for Amazon MQ for RabbitMQ brokers using VPC Lattice, RAM, and PrivateLink

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MAI‑Code‑1‑Flash model is now available across additional GitHub Copilot surfaces.

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Added support for repository-level AGENTS.md files in Copilot code review

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AWS Parallel Computing Service now supports EC2 P6e-GB200 and P6e-GB300 UltraServer instances for large‑scale GPU workloads.

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Added nested virtualization support to many new Intel instance families (C7i, R7i, M7i, etc.) and their flexible variants

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Adds urgent‑contact interruption so a contact can ring an agent even if they’re on another call, overriding normal routing.

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Compute Optimizer now incorporates two new CloudWatch metrics (VolumeIOPSExceededCheck and VolumeThroughputExceededCheck) for EBS volume rightsizing

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Introduces Ministral-3-14B-Instruct multimodal model in SageMaker JumpStart for edge‑optimized AI assistants and vision‑enabled apps

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Added all-MiniLM-L12-v2 model to SageMaker JumpStart for semantic search and sentence similarity applications.

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Introduce public preview of automatic duplicate issue detection to help maintainers triage efficiently

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Adds customer‑routed control‑plane egress, letting API server traffic flow through your VPC

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Pull request author search now includes PRs created by the Copilot cloud agent on behalf of a user.

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Introduces a repository switcher in the global navigation for quick repository jumps

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Introduces the ability to build new custom GitHub Actions runner images using existing custom images as a base.

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Adds native observability for SageMaker inference endpoints, exposing token latency, GPU health, scaling events, and other performance metrics in real time.

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Added SMS publishing capability for Amazon SNS in the Asia Pacific (Seoul) region

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Updated the checkout action to use safer default behavior for pull_request_target events, reducing token and secret exposure

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Introduces workflow execution protections in public preview for GitHub Enterprise, organizations, and repositories.

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Release notes now automatically list all pull requests merged since the previous release.

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Adds ability to customize Linux capabilities for containers in fleet definitions, enabling specialized networking and debugging features.

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General Purpose (gp3) volumes now support up to 64 TiB, 80,000 IOPS, and 2,000 MiB/s throughput (4‑8× previous limits).

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Added Ubuntu 24.04 LTS bundle for Amazon WorkSpaces Personal in the AWS China (Ningxia) region.

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Fixed multiple high‑severity security bugs in TLS, crypto, HTTP/2, DNS, and permission handling (e.g., hostname normalization, WebCrypto output length guard, SNI case‑sensitivity)

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Strengthened TLS and DNS security: hostname normalization for server identity, case‑sensitive SNI fix, rejecting hostnames with embedded NUL bytes, and binding reusable sessions to authenticated hosts.

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TLS hardening: normalize hostnames for server identity, fix case‑sensitive SNI matching, and bind reusable sessions to authenticated hosts

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Added the /automate skill for on-demand automation execution