Microsoft’s .NET 10 arrives in first preview

Microsoft has rolled out the first preview of .NET 10, a major new version of the company’s flagship software development platform. Likely to arrive as a production release in November, .NET 10 introduces C# 14 and adds major enhancements to the .NET runtime, SDK, libraries, ASP.NET Core, Blazor, and .NET MAUI, the company said.

Unveiled February 25, .NET 10 Preview 1 can be downloaded from dotnet.microsoft.com.

Enhancements arriving with C# 14 include first-class support for System.Span<T> and System.ReadOnlySpan<T> in the language. This involves new implicit conversions that allow more natural programming with these types, Microsoft said. This support boosts performance with no risk to safety. Also in C# 14, the argument to nameof can be an unbound generic type. C# 14 also lets developers add parameter modifiers such as scoped, ref, inor out or ref readonly to lambda expression parameters without specifying the parameter type.