Developer changelog updates for July 2026

Summary

Introduces public secret scanning monitoring for enterprise accounts.

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Enterprise admins can set "model": "auto" in managed-settings.json to enable auto model selection by default.

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Increased default runtime quota limits for AgentCore, allowing up to 5,000 concurrent sessions in US East/West regions and 2,500 in other regions

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GitHub Models will be fully retired on July 30 2026.

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CloudWatch now lets you create alarms directly from log query results, removing the need for intermediate metric filters or custom metrics.

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ECS Service Connect now routes traffic to same‑AZ endpoints first, cutting cross‑AZ data transfer and latency.

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Published the @next/swc wasm web package that was unintentionally omitted since v15.5.15.

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Introduces GA of managed‑settings.json for GitHub Enterprise Cloud

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Adds secret scanning validators for Asana, IBM, and MessageBird

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Adds real-time deployment observability in the Amazon ECS console with a live timeline, health monitoring, and automatic refresh.

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Introduces Microsoft C++ Language Server as a Copilot Plugins marketplace plugin

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Publish @next/swc wasm web artifact that was missed since v16.2.4

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Introduces Assurance Assistant in AWS Artifact, an AI‑driven tool that generates citation‑backed answers to security and compliance queries.

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Partners can now link existing AWS Marketplace solutions and product listings to co‑sell opportunities in Partner Central.

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Kimi K2.7 Code open‑weight model is now generally available in GitHub Copilot.

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Copilot Vision launched as generally available.

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Added support for setting AI credit session limits in the Copilot CLI to cap agent spending per session.

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Added Amazon Bedrock AgentCore support in four new AWS regions: AP Bangkok, AP Malaysia, EU Milan, and EU Spain.

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Added configurable deployment circuit breaker settings for ECS services, allowing custom failure thresholds by count or percentage.

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Added cross‑region automated backup replication for Amazon RDS in four new AWS regions, expanding geographic disaster‑recovery options

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Added three Runtime Monitoring detections (Persistence, PrivilegeEscalation, DefenseEvasion) that trigger on sensitive file modifications in EC2, EKS, and ECS workloads.

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Added a desktop flag for type checking, registered deep‑link URL schemes at bundle time, and upgraded Laufey to version 0.5.0.

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Introduces managed A/B testing and multivariate experiment capabilities directly in AWS AppConfig.

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Express Mode now accepts custom ECS task definitions, enabling reuse of existing configurations and advanced task-level settings.

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GitHub Copilot's browser tools for VS Code are now generally available.

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Adds ability to rollback an EKS cluster to the previous Kubernetes minor version within 7 days of an upgrade.

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Amazon Managed Service for Prometheus is now FedRAMP High and DoD CC SRG Impact Level 4/5 authorized in AWS GovCloud (US), enabling use in sensitive federal and public sector workloads.

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AWS Security Agent is now available in Mumbai, Singapore, and São Paulo regions

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Added extensive accessibility upgrades (UserIcon, FilterPill, dashboard variable UI, color‑blind safe line styles) and numerous alerting UI/API enhancements, including Mimir auto‑sync, label selector support, and reusable enrichment hooks.

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Copilot CLI now automatically selects the optimal model for each task

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RDS for Db2 now supports joining self‑managed Microsoft AD domains (on‑prem, AWS, or other clouds) using Kerberos for single sign‑on.

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Added more trace collection during SSI installation on Linux hosts.

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Introduces a new log‑analytics‑optimized engine for OpenSearch (v3.5+) delivering up to 4× price‑performance and up to 70% lower storage.