Who contributed to .NET on August 19, 2026?

9 developers shipped this update, including PureWeen, copilot-swe-agent, Missy Messa, Copilot, Tomas Grosup, bartelink, bbatsov, and dotnet-maestro[bot], and 1 more.

What were the notable .NET updates?

[ci] Replace custom NuGet.org publishing with 1ES.PublishNuget, [ci] Replace custom NuGet.org publishing with 1ES.PublishNuget (#36568), and Add local net11 official build readiness checks.

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The Wire · Showcase

MAUI Overhauls NuGet Publishing as FSharp Preps for VS 18.11

By RepoJournal · Filed 07:00 UTC on August 19, 2026 · About .NET

9 people shipped this

dotnet-maestro @dotnet-maestro 5 cited

Missy Messa @missymessa 2 cited

Tomas Grosup @T-Gro 2 cited

PureWeen @PureWeen 1 cited

copilot-swe-agent @copilot-swe-agent 1 cited

Copilot @Copilot 1 cited

bartelink @bartelink 1 cited

bbatsov @bbatsov 1 cited

dotnet-maestro[bot] @dotnet-maestro[bot]

MAUI is replacing its custom NuGet publishing with Microsoft's 1ES.PublishNuget, and FSharp is rolling Microsoft.Build deps forward to VS 18.11, two moves that reshape release engineering across the .NET ecosystem.

The biggest shift: MAUI's release pipeline is swapping its hand-rolled NuGet.org publishing for 1ES.PublishNuget [1], a Microsoft-owned task that eliminates custom authentication, retries, and quota rotation [2]. This lands alongside added release-readiness health checks for local net11 previews [3] and a cleanup of the Publish-Build-Assets variable group [4], plus a move to workload-identity federation for OneLocBuild feed access [5]. Over in FSharp, the compiler is unpinning MSBuild dependencies and flowing to VS 18.11 (18.11.0-1.26417.9) [6], which fixes prebuilt issues in the VMR source-only build. On the language front, FSharp.Core gains generic print and println functions [7], and a new StartTaskImmediate async feature directly addresses a longstanding fslang suggestion [8]. To keep the inline-metadata regression from sneaking back, Chiron is being added to the compiler regression-test matrix [9]. Meanwhile, the dotnet/dotnet monorepo is pulling in a steady stream of codeflow updates from MSBuild, Roslyn, SDK, Arcade, NuGet [refs:11-15], ensuring all the moving parts stay in sync. The quote from the Chiron PR captures the stakes: "a compiler that misreads Aether's legacy pickled inline flag drops the inline body and emits a call to the dynamic-invocation stub" [9].

Action items

→ Review MAUI's switch to 1ES.PublishNuget and update any custom publishing scripts dotnet/maui [plan]
→ Monitor FSharp's MSBuild unpin to VS 18.11 - it may affect your build environment dotnet/fsharp [monitor]
→ Test generic print/println in FSharp.Core if you rely on printing dotnet/fsharp [plan]
→ Check dotnet/dotnet codeflow updates for any breaking changes in your dependencies dotnet/dotnet [monitor]

References

[1] [ci] Replace custom NuGet.org publishing with 1ES.PublishNuget ↗ dotnet/maui
[2] [ci] Replace custom NuGet.org publishing with 1ES.PublishNuget (#36568) dotnet/maui
[3] Add local net11 official build readiness checks ↗ dotnet/maui
[4] Remove Publish-Build-Assets variable group from main (#37589) dotnet/maui
[5] Use WIF for OneLocBuild feed access (#37607) dotnet/maui
[6] Unpin MSBuild deps and flow to VS 18.11 (18.11.0-1.26417.9) (#20278) dotnet/fsharp
[7] Add generic print and println functions to FSharp.Core ↗ dotnet/fsharp
[8] feat(Async): StartTaskImmediate ↗ dotnet/fsharp
[9] Add Chiron to the compiler regression-test matrix (#20281) dotnet/fsharp
[10] [main] Source code updates from dotnet/msbuild ↗ dotnet/dotnet
[11] [main] Source code updates from dotnet/roslyn ↗ dotnet/dotnet
[12] [main] Source code updates from dotnet/sdk ↗ dotnet/dotnet
[13] [main] Source code updates from dotnet/arcade ↗ dotnet/dotnet
[14] [main] Source code updates from nuget/nuget.client ↗ dotnet/dotnet

Quick answers

What shipped in .NET on August 19, 2026?: MAUI is replacing its custom NuGet publishing with Microsoft's 1ES.PublishNuget, and FSharp is rolling Microsoft.Build deps forward to VS 18.11, two moves that reshape release engineering across the .NET ecosystem. In total, 23 commits and 23 pull requests landed.
Who contributed to .NET on August 19, 2026?: 9 developers shipped this update, including PureWeen, copilot-swe-agent, Missy Messa, Copilot, Tomas Grosup, bartelink, bbatsov, and dotnet-maestro[bot], and 1 more.
What were the notable .NET updates?: [ci] Replace custom NuGet.org publishing with 1ES.PublishNuget, [ci] Replace custom NuGet.org publishing with 1ES.PublishNuget (#36568), and Add local net11 official build readiness checks.

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