🎯 .NET 11 Preview 3 Arrives with Major Improvements
Microsoft has released .NET 11 Preview 3, bringing significant updates across the entire .NET stack. This preview includes improvements to the Runtime, SDK, Libraries, ASP.NET Core, C#, Entity Framework Core, and .NET MAUI.
Key highlights:
- Runtime: JIT optimizations for switches, bounds checks, and casts
- SDK: Solution filters can now be edited from CLI, file-based apps can be split across files
- C#: Union type support continues to evolve
- ASP.NET Core: Zstandard response compression and earlier HTTP/3 request processing
- .NET MAUI: Maps add clustering, styling, and richer interaction APIs
🛡️ .NET April 2026 Security Updates Released
Microsoft has released the April 2026 security updates for .NET:
- .NET 10.0.6
- .NET 9.0.15
- .NET 8.0.26
This month's patch addresses multiple CVEs including:
- CVE-2026-23666: .NET Denial of Service Vulnerability
- CVE-2026-26171: .NET Security Feature Bypass Vulnerability
- CVE-2026-32178: .NET Remote Code Execution Vulnerability
- CVE-2026-32203: .NET Denial of Service Vulnerability
- CVE-2026-33116: .NET Remote Code Execution Vulnerability
Action required: Update your .NET installations immediately.
🖼️ MAI-Image-2-Efficient: Microsoft's Production Image Workhorse
Microsoft AI has launched MAI-Image-2-Efficient, a faster and cheaper version of its flagship image generation model. Key benefits:
- 22% faster than MAI-Image-2
- 41% lower cost ($5 per 1M text input tokens, $19.50 per 1M image output tokens)
- 40% faster than leading competitors on average
Available now in Microsoft Foundry and MAI Playground — production-ready for high-volume workflows.
🔀 GitHub Model Selection: Claude & Codex Agents Now Available
GitHub has enabled model selection for third-party coding agents. Developers can now choose Claude (Sonnet 4.6, Opus 4.5) and Codex (GPT-5.2-Codex, GPT-5.3-Codex, GPT-5.4) models.
⚠️ GitHub Copilot Data for AI Training: Opt-Out Deadline April 24
Important: Starting April 24, 2026, GitHub will use Copilot interaction data for AI model training. Users are opted in by default. Check your GitHub Account Settings.
🔧 Azure MCP Server 2.0: Enterprise-Ready Agentic Automation
Microsoft has released Azure MCP Server 2.0 with 276 MCP tools spanning 57 Azure services. Self-hosted deployments now supported for enterprise compliance.
📅 Stay Connected
That's your daily .NET news update. Stay tuned for more updates.
Tags: #dotnet #csharp #visualstudio #azure #ai #githubcopilot #maui #blazor
Comments (0)
Please sign in to leave a comment.