Microsoft finally moves the WSL2 kernel onto a more…
Microsoft is finally moving WSL2 away from its aging kernel with the first release of a new 6.6 LTS that can be built and installed right now ahead of it being rolled in by default.
www.inkl.comHere’s the latest general update on WSL2 based on recent reporting and official notes.
What is WSL2
- WSL2 is Microsoft’s Windows Subsystem for Linux version 2, which provides a real Linux kernel inside Windows for improved compatibility and performance compared with WSL1.
Recent kernel and releases
- In mid-2024 there were reports of Microsoft testing an updated WSL2 kernel based on newer Linux kernel series (6.x) with potential to replace the long-used 5.15 base. Some coverage noted that the 6.x kernel was released as a pre-release option and later rolled back due to issues while debugging continued. This indicated ongoing work to modernize the kernel in WSL2 but without a stable rollout at that time. These developments were described in outlets such as Windows Central and coverage tracking WSL2 kernel changes.[1][2]
- By late 2024, Microsoft published “What’s New” style updates for WSL, including enterprise security improvements and expanded distro support, signaling continued activity around WSL2 alongside the normal kernel lifecycle. These announcements were part of Microsoft’s official Windows Subsystem for Linux updates communications.[8][9]
Official progress and ecosystem context
- Microsoft’s developer blog and Command Line updates typically outline new capabilities such as security enhancements, distro management improvements, and integration with Windows Dev tools. For example, November 2024 and May 2024 updates highlighted enterprise features, distro improvements, and broader ecosystem support (e.g., Red Hat becoming an official WSL distro).[9][8]
- Community coverage over 2024–2025 reflected expectations that the WSL2 kernel would eventually move onto a newer LTS base with reduced patches, but noted that a stable, wide-spread rollout depended on stabilizing any issues found in pre-release builds.[2][1]
What this means for users
- If you rely on WSL2 today, you’re likely on the stable kernel that ships with your Windows build. You may see occasional changelogs or release notes from Microsoft that indicate kernel improvements, distro enhancements, and security updates in WSL2, but a full automatic switch to a newer kernel base typically appears after thorough testing and is released through ordinary Windows Update/WSL update channels.[8][9]
- For developers who want the absolute latest kernel improvements early, Microsoft and the community have offered pre-release channels or GitHub-hosted builds, but those come with caveats and are not recommended for production machines until stabilized.[1][2]
Illustration: how to stay current
- Regularly check:
- Windows Subsystem for Linux updates in the Windows Insider or Windows Update channels.
- Official Microsoft WSL blog posts for “What’s new” or “What's new in WSL” entries.
- Reputable outlets covering WSL2 kernel changes and rollout status.
If you’d like, I can pull the very latest official post titles and summarize the key changes, or tailor a short guide for how to verify your current WSL2 kernel version and how to safely test any pre-release builds on a separate test device. I can also monitor for any new announcements and provide a concise, up-to-date briefing with direct citations.