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2026-04-19 dotnet dotnet-11 regex

RegexOptions.AnyNewLine lands in .NET 11 Preview 3: Unicode-aware anchors without the \r? hacks

.NET 11 Preview 3 adds RegexOptions.AnyNewLine so ^, $, \Z, and . recognize every Unicode newline sequence, including \r\n, NEL, LS, and PS, with \r\n treated as one atomic break.

2026-04-18 aspire dotnet-11 dotnet

Aspire 13.2 --isolated: Run Parallel AppHost Instances Without Port Collisions

Aspire 13.2 ships an --isolated flag that gives each aspire run its own random ports and secrets store. It unblocks multi-checkout work, agent worktrees, and integration tests that need a live AppHost.

2026-04-18 dotnet dotnet-11 dotnet-cli

.NET 11 Preview 3: dotnet run -e sets environment variables without launch profiles

dotnet run -e in .NET 11 Preview 3 passes environment variables straight from the CLI and surfaces them as MSBuild RuntimeEnvironmentVariable items.

2026-04-18 dotnet-11 sdk dotnet-cli

dotnet sln finally edits solution filters from the CLI in .NET 11 Preview 3

.NET 11 Preview 3 teaches dotnet sln to create, add, remove, and list projects in .slnf solution filters, so large mono-repos can load a subset without opening Visual Studio.

2026-04-18 dotnet dotnet-11 aspire

dotnet watch in .NET 11 Preview 3: Aspire hosts, crash recovery, and saner Ctrl+C

dotnet watch gains Aspire app host integration, automatic relaunch after crashes, and fixed Ctrl+C handling for Windows desktop apps in .NET 11 Preview 3.

2026-04-18 ef-core dotnet-11 sql-server

EF Core 11 Prunes Unnecessary Reference Joins in Split Queries

EF Core 11 Preview 3 removes redundant to-one joins from split queries and drops unneeded ORDER BY keys. One reported scenario got 29% faster, another 22%. Here is what the SQL now looks like.

2026-04-18 dotnet-11 system-text-json csharp

System.Text.Json in .NET 11 Preview 3 adds PascalCase and per-member naming policies

.NET 11 Preview 3 finishes the naming-policy story in System.Text.Json: JsonNamingPolicy.PascalCase, a member-level [JsonNamingPolicy] attribute, and a type-level [JsonIgnore] default for cleaner DTOs.

2026-04-16 blazor aspnet-core dotnet-11

Blazor Virtualize Finally Handles Variable-Height Items in .NET 11

ASP.NET Core in .NET 11 Preview 3 teaches the Virtualize component to measure items at runtime, fixing the spacing and scroll jitter that uniform-height assumptions caused.

2026-04-16 dotnet-maui dotnet-11 maps

Pin Clustering Lands in .NET MAUI 11 Maps

.NET MAUI 11 Preview 3 adds built-in pin clustering to the Map control on Android and iOS, with ClusteringIdentifier groups and a ClusterClicked event.

2026-04-16 ef-core dotnet-11 performance

EF Core 11 Adds GetEntriesForState to Skip DetectChanges

EF Core 11 Preview 3 introduces ChangeTracker.GetEntriesForState, a state-filtered enumerator that avoids an extra DetectChanges pass in hot paths like SaveChanges interceptors and audit hooks.