F# updates in .NET 10 Preview 2 - Release Notes

March 18, 2025 · View on GitHub

Here's a summary of what's new in F# in this preview release:

F# Language
FSharp.Core standard library
FSharp.Compiler.Service

Note: Release notes for F# are generated for all contributions to the dotnet/fsharp repository and split across language, library and compiler changes.

F# Language

Release notes for new F# language features list language changes that have to be enabled by <LangVersion>preview</LangVersion> project property in .fsproj project file. They will become the default with .NET 10 release.

FSharp.Core Standard Library

Changes to the FSharp.Core standard library are applied automatically to projects compiled with new SDK, unless they pin down a lower FSharp.Core version.

FSharp.Compiler.Service

General improvements and bugfixes in the compiler implementation are at Release notes for FSharp.Compiler.Service.