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.

Today we are shipping a coordinated security and privacy update across every supported branch of PostSharp and Metalama. It covers the build toolchain, the design time services, telemetry, and the Visual Studio Tools. It does not change the public API or how you write aspects, and none of it reaches your compiled application: every issue is in tooling that runs on developer and build machines, so the applications you have already built and shipped are not affected.

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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.

We’ve released PostSharp 2026.0.10 with three fixes. It resolves a concurrency crash in DebuggerOptions initialization, a build failure with custom TFM aliases under .NET SDK 10.0.300+, and hangs in the Redis caching backend. See the GitHub release.

We’ve released Metalama 2026.1.17 with 3 bug fixes covering IAspectWeaver aspects with Contracts, expression-bodied async void overrides, and a design-time RPC hang. See the GitHub release.

Metalama 2026.1 is now generally available, and it’s our first long-term support (LTS) release. This is a consolidation release: we finished the C# 14 work we started in 2026.0, extended the advising API, redesigned the Redis caching backend, cut several third-party dependencies, and closed most of the bug backlog.

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We’ve released Metalama 2026.1.15-rc (see the GitHub release) and 2026.0.23 (see the GitHub release), both upgrading the underlying Roslyn compiler to 5.5.0 (Visual Studio 2026 Version 18.5.2).