We’ve cleaned up the metalama.net design with tighter, more consistent layouts and spacing, and brought the blog into the same dark, purple look as the rest of the site.

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, folding in the 2024.0.24 security and privacy hardening plus three fixes. It upgrades NuGet.Packaging to clear the NU1901 warning, resolves a caching-backend dispose deadlock, and fixes a spurious PS0242 license error through the .NET Framework pipe server. See the GitHub release.

We’ve released PostSharp 2024.0.24, a security and privacy hardening release closing our June 2026 review. It hardens the build toolchain against local attacks, moves all telemetry to HTTPS, and minimizes and de-correlates the data collected. See the GitHub release.

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).

We’ve released PostSharp 2026.0.9, fixing a build failure (Unable to deserialize project assets file) with .NET SDK 10.0.300+ and its project.assets.json v4 format. See the GitHub release.

We’ve promoted the 2026.1 line to release-candidate maturity with Metalama 2026.1.14-rc (see the GitHub release) and PostSharp and Metalama VSX 2026.1.3-rc (see the GitHub release). No functional changes from the previous previews.

We’ve released Metalama 2026.1.13-preview with 3 Rider-related bug fixes. See the GitHub release.

We’ve released Metalama 2026.1.12-preview with 3 bug fixes (see the GitHub release) and PostSharp and Metalama VSX 2026.1.2-preview with 4 bug fixes (see the GitHub release).

We’ve released Metalama 2026.1.11-preview with 1 enhancement and 4 bug fixes (see the GitHub release) and PostSharp and Metalama VSX 2026.1.1-preview with 3 enhancements and 4 bug fixes (see the GitHub release).

We’ve released Metalama 2026.0.22 with an updated Metalama.Compiler 2026.0.12. See the GitHub release.