Briefs

We’ve released Metalama 2026.1.25, which makes unattended and evaluation-mode builds work on macOS with .NET 11. It also improves the detection of continuous integration servers, makes an unlicensed build report LAMA0806 instead of failing with MSB4018, and fixes a design-time crash in fabrics. See the release notes.

We’ve released PostSharp and Metalama VSX 2026.1.7. The extension itself is unchanged; this release updates the bundled Metalama 2026.1 from 2026.1.22 to 2026.1.24, so Visual Studio picks up the configuration-system improvements of that version. See the GitHub release.

We’ve released Metalama 2026.1.24, improving the performance of the configuration system — which fixes two configuration-lock build failures — and the compile-time performance of durable references. It also merges Roslyn 5.9, adding support for the .NET SDK 10.0.400 analyzers. See the release notes.

We’ve released Metalama 2026.1.23, fixing three design-time crashes, a 2026.1.22 regression affecting [Inheritable] aspects on generic types with a struct constraint, and a series of nullability and tuple defects in the code model. It also has two breaking changes in type comparison, and updates Metalama.Compiler to 2026.1.15. See the release notes.

We’ve released PostSharp and Metalama VSX 2026.1.6, a reliability pass over the Visual Studio design-time features. It fixes the two most widely-reported CodeLens defects, a crash in the options page and a package-loading failure, and restores CodeLens and the Aspect Explorer in projects referencing Metalama 2025.1 or 2025.2. See the GitHub release.

Please note that Metalama 2025.1 has reached the end of its servicing life as of August 1, 2026, and no longer receives fixes. If you are still on it, upgrade to Metalama 2026.1 LTS. See our version and support policy for details.

We’ve released PostSharp 2026.0.16 (see the GitHub release) and 2024.0.25 (see the GitHub release), removing the obsolete watermark task and fixing the Customer Experience Improvement Program uploader. 2026.0.16 adds two fixes on top, covering an invalid multicast attribute in a referenced assembly and a duplicate license key in the registry.

We’ve released Metalama 2026.1.22, a large reliability release fixing design-time memory growth, a series of design-time crashes, the reference-assembly build, and the telemetry upload. See the release notes.

We’ve released PostSharp 2026.0.15 (see the GitHub release) and 2024.0.24 (see the GitHub release) with six fixes covering caching back-end disposal hangs, compiler metadata reading and PS0264 assembly load failures, plus an EULA update to v2026-Q3.

We’ve released Metalama 2026.1.21 with 7 bug fixes, covering a design-time InvalidCastException when merging contract options across TFM-specific compile-time assemblies, a permanent hang of the design-time RPC server, a caching-invalidation hang, and [Virtualize] on abstract classes. It also updates Metalama.Compiler to 2026.1.13. See the release notes.

We’ve released Metalama 2026.1.20, fixing a FileNotFoundException when invoking a compile-time extension method from a referenced package after a dependency version change left a stale compile-time cache. See the GitHub release.

We’ve rebuilt postsharp.net as the single home for both products, with Metalama, PostSharp and a shared blog. The former metalama.net and blog.postsharp.net sites now redirect here, so existing links keep working. Both products are now supported under the same roof.

We’ve released security updates Metalama 2026.0.25 (see the GitHub release) and 2025.1.18 (see the GitHub release), backporting two security fixes from the 2026.1 line.

We’ve released PostSharp 2026.0.13 (see the GitHub release) and 2024.0.23 (see the GitHub release), a security and privacy hardening pair closing our June 2026 review with a hardened build toolchain, telemetry over HTTPS, and minimized, de-correlated data collection. 2026.0.13 adds three fixes on top, covering the NU1901 warning, a caching-backend dispose deadlock and a spurious PS0242 license error.

We’ve released Metalama 2026.1.19 with a comprehensive security and privacy overhaul hardening telemetry, diagnostics reporting, the configuration UI, and the design-time RPC channel, plus an update to Roslyn 5.6 (Visual Studio 2026 version 18.6.3). See the GitHub release.

We’ve released Metalama 2026.0.24 updating Metalama.Compiler to Roslyn 5.6 (Visual Studio 2026 version 18.6.3). See the GitHub release.

We’ve released PostSharp 2026.0.12 with a Redis caching dispose-deadlock fix and several WinRT/.winmd build-time fixes for consuming Windows Runtime types on .NET Framework. See the GitHub release.

We’ve released PostSharp 2026.0.11, fixing a “Loop when loading Windows.winmd” build failure on .NET Framework projects that consume WinRT types. See the GitHub release.

We’ve released Metalama 2026.1.18 with a fix for [Observable] silently dropping the setter body of a field-keyword (semi-auto) property. See the GitHub release.