API diff between .NET 11 Preview 6 and .NET 11 RC 1

[github-actions]

Note

Incremental public API diff .NET 11 Preview 6 → .NET 11 RC 1.

Draft — auto-maintained while .NET 11 RC 1 is the in-development frontier.

11.0-preview.6 (11.0.0-preview.6.26359.118) → 11.0-rc.1 (11.0.0-rc.1.26402.102) — incremental track.

How this was generated

Generated by the api-diff skill / RunApiDiff.ps1.

• Previous: 11.0.0-preview.6.26359.118 @ https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json
• Current: 11.0.0-rc.1.26402.102 @ https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet11/nuget/v3/index.json
• Generated at: 2026-08-04T13:57:36Z
• Report count: 41 files

Status

in-development — draft while .NET 11 RC 1 is the in-development frontier on main.

Related API proposals

[!NOTE]
This list might not account for every API change, but every proposal shown is verified against this API diff.

• dotnet/runtime#120198 — Microsoft.Extensions.DependencyInjection.EmptyServiceProvider
• dotnet/runtime#128322 — System.Diagnostics.ProcessExitStatus, System.Diagnostics.Process.Signal, System.Diagnostics.Process.Run, System.Diagnostics.Process.RunAsync
• dotnet/runtime#128453 — System.Diagnostics.Process.RunAndCaptureText, System.Diagnostics.Process.RunAndCaptureTextAsync, System.Diagnostics.ProcessTextOutput
• dotnet/runtime#129048 — Microsoft.Extensions.Caching.Hybrid.HybridCache.GetOrCreateAsync (ReadOnlySpan<char> / interpolated-string overloads)
• dotnet/runtime#130140 — System.Char.ToLowerOrdinal, System.Char.ToUpperOrdinal, MemoryExtensions.ToLowerOrdinal
• dotnet/runtime#130537 — INumberBase<T>.TryParsePartial
• dotnet/runtime#130809 — System.Text.Json.Serialization.JsonPolymorphicAttribute.InferClosedTypePolymorphism
• dotnet/runtime#131097 — System.Text.Json.Serialization.JsonConverterDefaults.BFloat16Converter, Decimal32Converter, Decimal64Converter, Decimal128Converter
• dotnet/runtime#131500 — System.Collections.BitArray(ReadOnlySpan<bool>), BitArray(ReadOnlySpan<byte>), BitArray(ReadOnlySpan<int>)

Review checklist

Repo area owners

• ASP.NET - @dotnet/aspnet-api-review
• WinForms - @dotnet/dotnet-winforms
• WPF - @dotnet/wpf-developers @dotnet/dotnet-wpf-maintainers
• Runtime - @JulieLeeMSFT @steveisok @agocke @lewing
• Libraries - @jeffhandley @SamMonoRT @karelz

Libraries area owners

• Extensions-Caching @dotnet/area-extensions-caching
• Extensions-DependencyInjection @dotnet/area-extensions-dependencyinjection
• Extensions-Primitives @dotnet/area-extensions-primitives
• System.Collections @dotnet/area-system-collections
• System.Diagnostics.Process @dotnet/area-system-diagnostics-process
• System.IO.Compression @dotnet/area-system-io-compression
• System.Memory @dotnet/area-system-memory
• System.Net.Http @dotnet/ncl
• System.Net (NameResolution) @dotnet/ncl
• System.Net.Security @dotnet/ncl @bartonjs @vcsjones
• System.Runtime @dotnet/area-system-runtime
• System.Runtime.InteropServices @dotnet/interop-contrib
• System.Runtime.Intrinsics @dotnet/area-system-runtime-intrinsics
• System.Security @bartonjs @vcsjones @dotnet/area-system-security
• System.Text.Json @dotnet/area-system-text-json

Feedback applied

Temporary attribute exclusions: None.

Permanent attribute exclusions added this run: None.

Permanent assembly exclusions added this run: None.

Out-of-scope feedback:

• Review comment (jeffhandley, 2026-07-30): Requested excluding everything in this diff that also appears in the API diff between .NET 11 Preview 6 and .NET 11 Preview 7 (#10482). This is a semantic diff-baseline change (regenerating from a different base build), which is out of scope for attribute/assembly exclusions. The diff represents real API changes between Preview 6 and RC 1 as designed. Once PR API diff between .NET 11 Preview 6 and .NET 11 Preview 7 #10482 merges and an updated preview.7 build is available as the new baseline, the automation can regenerate this diff as preview.7 → rc.1.

Automation state

# api-diff:state:begin
# api-diff-marker: 11.0-preview.6_to_11.0-rc.1
track: "incremental"
previous-version-milestone: "11.0-preview.6"
current-version-milestone: "11.0-rc.1"
previous-version: "11.0.0-preview.6.26359.118"
current-version: "11.0.0-rc.1.26402.102"
previous-feed: "https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json"
current-feed: "https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet11/nuget/v3/index.json"
status: "in-development"
report-count: 41
generated-at: "2026-08-04T13:57:36Z"
temporary-attributes-excluded: []
# api-diff:state:end

Generated by API Diff Worker · 141.3 AIC · ⌖ 7.26 AIC · ⊞ 11.2K · ◷

[jeffhandley]

We should exclude everything in here that is part of the API diff between .NET 11 Preview 6 and .NET 11 Preview 7 (#10482).

Once that PR merges, I expect this PR will get updated or replaced to become a diff between .NET 11 Preview 7 and .NET 11 RC 1.

[github-actions]

Commit pushed: 811b50c

Generated by API Diff Worker · 50.2 AIC · ⌖ 5.55 AIC · ⊞ 11.2K

[github-actions]

Commit pushed: e0096b9

Generated by API Diff Worker · 83 AIC · ⌖ 5.28 AIC · ⊞ 11.2K