F# Weekly #38, 2025 – .NET STS releases supported for 24 months

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• .NET STS releases supported for 24 months – .NET Blog
• Announcing: JetBrains .NET Days Online 2025 | The .NET Tools Blog
• Application Insights Code Optimizations for .NET Apps – .NET Blog
• Prompt Files and Instructions Files Explained – .NET Blog
• AI-Assisted Development powered by Local Models | Azure AI Foundry Blog
• GitHub app for Teams now in public preview – Microsoft 365 Developer Blog
• Getting the most out of MCP in Visual Studio with Prompts, Resources, and Sampling – Visual Studio BlogIntroducing auto model selection (preview)
• Introducing auto model selection (preview)

Videos

• What I have learned from 15 years of functional programming of FP 2025
• This Explains Why C# 14 Feels So Much Like F#
• Fast Focus – Introduction to Model Context Protocol (MCP) Servers
• ASP.NET Community Standup – .NET WebAssembly performance improvements
• .NET MAUI Community Standup – Talking RC1, iPhone, and more
• .NET Data Community Standup – Let’s talk about experience with Dapper and EF Core

Blogs

• C# will become F# – Gautier Talks About Microsoft Technology
• The Uncomfortable Truth of Comfortable Dysfunction

.NET STS releases are now supported for 2 years instead of 18 months starting with .NET 9 (the current STS). STS releases now go out-of-support on the same day as the previous LTS release. Upgrading to an STS release will no longer cause you to lose support!devblogs.microsoft.com/dotnet/dotne…

— Damian Edwards (@damianedwards.com) 2025-09-16T17:56:08.203Z

Highlighted projects

• falcoframework/Falco.OpenApi: OpenAPI integration for Falco.
• cmeeren/Felicity: Boilerplate-free, idiomatic JSON:API for your beautiful, idiomatic F# domain model. Optimized for developer happiness.
• cmeeren/Faqt: Fluent assertions for F#
• Smaug123/WoofWare.Myriad: Some Myriad source generators for F#
• tommililja/Farse: Simple parsing library for F# using System.Text.Json.

New Releases

• SQLProvider 1.5.17
• Partas.Solid 2.1.1
• Felicity 0.24.2
• DbFlow 0.4.0
• Faqt 5.1.0
• HashifyNET 6.1.0
• FsHttp 15.0.2
• Reallukee.Confole 1.0.0
• WoofWare.Myriad.Plugins 8.1.1
• Falco.OpenApi 1.1.0
• Falco.Htmx 1.1.0
• Farse 0.4.0
• EasyBuild.ChangelogGen 5.0.1

That’s all for now. Have a great week.

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