Who contributed to .NET on August 11, 2026?

14 developers shipped this update, including Javier Calvarro Nelson, snemeckayova, Copilot, Matous Kozak, Evangelink, github-actions[bot], github-actions, and Abhitej John, and 6 more.

What were the notable .NET updates?

[Blazor] Migrate Components.Testing from xUnit v3 to MSTest on MTP (#67083), Add Native AOT Components testing harness, and Support nullable array element types in parameter schemas.

@dotnet

The .NET runtime, ASP.NET, and the C# tooling

github ↗

Pick a date

Topics: .NET Full archive →

The Wire · Showcase

BLAZOR TESTING OVERHAUL SHIPS NATIVE AOT HARNESS, ROSLYN REVERTS SONIC SPLIT

By RepoJournal · Filed 07:00 UTC on August 11, 2026 · About .NET

14 people shipped this

Javier Calvarro Nelson @javiercn 2 cited

Chris Sienkiewicz @chsienki 2 cited

snemeckayova @snemeckayova 1 cited

Matous Kozak @matouskozak 1 cited

Evangelink @Evangelink 1 cited

Copilot @Copilot

github-actions[bot] @github-actions[bot]

github-actions @github-actions

Abhitej John @AbhitejJohn

Jan Jones @jjonescz

Ankita Khera @akhera99

Marko Lahma @lahma

dependabot @dependabot

Liangying.Wei @vicancy

ASP.NET Core's Components.Testing library graduates from xUnit to MSTest on Microsoft Testing Platform, while Roslyn backs out its ambitious Sonic declaration/implementation split to unblock the next build.

The Blazor testing framework completes its migration away from xUnit v3, replacing ServerFixture<T> with a factory-based ServerFactory<T> pattern and moving to explicit MSTest TestContext parameters [1]. In parallel, the team shipped a Native AOT testing harness for Components.Testing [2], letting E2E tests publish applications as compiled native executables without dragging testing infrastructure into production code. On the schema front, ASP.NET Core now correctly preserves nullable array element types in parameter schemas, using NullabilityInfoContext to recover annotation metadata that was previously lost [3]. Over in Roslyn, a full revert of the Sonic declaration/implementation split landed [4], backing out the fast/slow discovery path that introduced regressions like lost child content parameters in fallback components [5]. The split drove enough insertion blockers that the team judged reverting cleaner than patching forward. Performance repo updated Android R2R measurements to use MAUI's public MauiEnableFullReadyToRun property, replacing a removed private switch [6]. Across 5 repos, 26 commits and 39 PRs landed; the skills repo added golden end-to-end test generation scenarios for zero-to-one, gap-analysis, and ambient-dependency test workflows [7].

Action items

→ Review Blazor MSTest migration patterns if you maintain Components.Testing consumers dotnet/aspnetcore [plan]
→ Expect Roslyn Sonic to re-land in a future build with stricter pre-merge testing dotnet/roslyn [monitor]
→ Update Android SDK FullR2R measurements if benchmarking MAUI apps dotnet/performance [plan]

References

[1] [Blazor] Migrate Components.Testing from xUnit v3 to MSTest on MTP (#67083) dotnet/aspnetcore
[2] Add Native AOT Components testing harness ↗ dotnet/aspnetcore
[3] Support nullable array element types in parameter schemas ↗ dotnet/aspnetcore
[4] Revert the sonic decl/impl split merge from main ↗ dotnet/roslyn
[5] Keep a fallback component's derived tag helpers during discovery (#84818) dotnet/roslyn
[6] [Android] Update full R2R property (#5273) dotnet/performance
[7] Add golden end-to-end test generation scenarios ↗ dotnet/skills

Quick answers

What shipped in .NET on August 11, 2026?: ASP.NET Core's Components.Testing library graduates from xUnit to MSTest on Microsoft Testing Platform, while Roslyn backs out its ambitious Sonic declaration/implementation split to unblock the next build. In total, 26 commits, 39 pull requests, and 1 releases landed.
Who contributed to .NET on August 11, 2026?: 14 developers shipped this update, including Javier Calvarro Nelson, snemeckayova, Copilot, Matous Kozak, Evangelink, github-actions[bot], github-actions, and Abhitej John, and 6 more.
What were the notable .NET updates?: [Blazor] Migrate Components.Testing from xUnit v3 to MSTest on MTP (#67083), Add Native AOT Components testing harness, and Support nullable array element types in parameter schemas.

BROWSER WASM BLOAT FIXED, RELOCATION SHRINKING SHIPS

dotnet/runtime eliminated unnecessary cryptography dependencies from browser builds while implementing code section relocation optimizations that shrink Wasm binaries.

dotnet 91 shipped

@dotnet Aug 10

RAZOR DECL/IMPL SPLIT BREAKS ASPNETCORE RUNTIME COMPILER

A recent Razor refactor removed public APIs that ASP.NET Core's runtime view compiler depends on, forcing an emergency restore.

dotnet 8 shipped

@dotnet Aug 9

RUNTIME JITS AWAY XML SERIALIZER DEPENDENCY, ORLEANS DOCS RESCUE MISSION CONTINUES

The .NET runtime shed a test dependency on XML serialization while Orleans spent the day restoring critical guidance that vanished in a recent docs overhaul.

dotnet 34 shipped

@dotnet Aug 8

MAUI LOCKS IN NET11.0, RUNTIME UNIFIES STUB MEMORY

MAUI pivots its production CI to .NET 11.0 while Runtime consolidates stub allocation with JIT infrastructure, eliminating a parallel memory path that's leaked 15 years of technical debt.

dotnet 71 shipped

Elsewhere on the wire

AI Agents Aug 12

LANGCHAIN SHIPS THREE CRITICAL RELEASES IN 12 HOURS, CLOSES SETUPTOOLS VULNERABILITY

LangChain pushed langchain-core 1.5.4, langchain 1.3.15, and langchain-anthropic 1.5.5 overnight while patching a setuptools supply-chain risk that gated the Hugging Face integration.

ai-agents 59 shipped

Local LLMs Aug 12

OLLAMA CUTS REPEAT PENALTY BLOAT, LLAMA.CPP SHIPS POCKET-TTS SUPPORT

Ollama kills a decade of default penalty cruft that was drowning every model, while llama.cpp gains multimodal audio chops and vLLM fixes ROCm speculative decoding corruption.