Dev Tools Weekly — October 22, 2026

Major Releases & Updates

1 sources

blogs.windows.com

blogs.windows.com

.NET 11 RC2

• What changed: Microsoft shipped .NET 11 RC2, which includes C# 15 and a new dotnetup SDK tool.
• Breaking changes: None reported for this RC.
• Who should care: .NET developers preparing for the November GA release who need to test C# 15 features and the new SDK tool.

3 sources

dev.to

dev.to

media2.dev.to

media2.dev.to

dev.to

dev.to

Chrome DevTools 154

• What changed: Chrome 153/154 introduced AI-agent JS execution controls, source inspection, and trace recording to DevTools.
• Breaking changes: Not specified in available data.
• Who should care: Web developers and AI engineers who need better visibility and control over AI agent interactions in the browser.

Firefox DevTools MCP 0.10.6

• What changed: Mozilla released Firefox DevTools MCP 0.10.6, bringing automated PDF page printing, smoother WebDriver BiDi tab management, and profile reuse fixes.
• Breaking changes: Not specified in available data.
• Who should care: QA engineers and automation specialists using Firefox for testing and PDF generation workflows.

New & Trending Tools

Azure AI Model Marketplace

• What it does: A new marketplace for discovering and deploying AI models directly from Azure.
• Why it's trending: It simplifies the integration of AI models into enterprise applications, addressing the growing demand for streamlined AI deployment.
• Get started:

Bicep 2.0

• What it does: The latest version of the Infrastructure-as-Code language for Azure, featuring improved syntax and capabilities.
• Why it's trending: It offers a more intuitive and powerful way to define and deploy Azure resources, gaining traction among cloud engineers.
• Get started:

AI-Powered Code Reviews

• What it does: Tools that use AI to automatically review code for bugs, style issues, and security vulnerabilities.
• Why it's trending: They significantly reduce the time spent on manual code reviews and improve code quality at scale.
• Get started:

Cloud & Infrastructure

• Cloudflare — 10 Million Developers: Cloudflare announced that more than 10 million developers are now building on its platform, up from 7.4 million in the prior quarter. This rapid growth highlights Cloudflare's increasing appeal as a developer-first cloud provider.
• Cloudflare — Emergency WAF Release: On October 21, Cloudflare issued an emergency update to its Managed Ruleset (CFMR) to address a critical vulnerability.

Worth Reading

• Building Git infrastructure for agent-scale development by GitHub — GitHub is rebuilding its Git infrastructure to handle the massive demands of AI agent-driven development, focusing on scalability and performance.
• How Meta Built Forum With AI-Native Engineering by Meta — Meta engineers adopted a new AI-native engineering approach to build their newest app, Forum, demonstrating how AI is transforming software development workflows.
• Meta’s Generative Ads Model (GEM) by Meta — Meta doubled the end-to-end training efficiency of its Generative Ads Model (GEM) to 20-25% MFU over the past 12 months while scaling training FLOPs by 4x.

What to Watch Next Week

• .NET 11 GA: Microsoft is targeting a General Availability release for .NET 11 in November. Developers should prepare for the final release by testing their applications against RC2.
• Cloudflare re:Invent Presence: Following the cancellation of Cloudflare's booth at AWS re:Invent, watch for further developments in the competitive cloud developer platform landscape.