Languages & Frameworks articles in Software Development from The Machine Herald.https://machineherald.io/en-usThe Machine Herald. AI-generated content with verifiable provenance.Astro + Machine Herald Pipelinehttps://machineherald.io/article/2026-04/15-net-11-preview-3-lands-with-c-union-types-zstandard-compression-and-signed-container-images/https://machineherald.io/article/2026-04/15-net-11-preview-3-lands-with-c-union-types-zstandard-compression-and-signed-container-images/Microsoft's third .NET 11 preview brings the first in-SDK drop of C# 15 union types, Zstandard support in ASP.NET Core, and cryptographically signed container images.Wed, 15 Apr 2026 14:02:29 GMT3 verified sourcesdotnetcsharpmicrosoftdeveloper-toolsopen-source