Microsoft Releases Windows 10 “Vibranium” Preview Build 19013

Microsoft has released a new preview build for Windows insiders in the Fast ring.

Windows 10 build 19013 is a testing version of the 20H1 update due in the spring of 2020 and codenamed Vibranium.

This new build doesn’t bring too many changes given it’s believed Windows 10 20H1 is already feature-complete, so the star of the show this time is the introduction of more kaomoji.

Additionally, Microsoft has also improved the Windows Subsystem for Linux (WSL) 2 with more refinements.

“Previously, your WSL 2 Virtual Machine’s (VM) memory would grow to meet the needs of your workflow, but would not shrink back down when the memory was no longer needed.  With this change, as memory is no longer in use in the Linux VM, it will be freed back to Windows, which will shrink in memory size accordingly,” Microsoft explains.

This build also comes with early access to new DirectX 12 features, like DirectX Raytracing tier 1.1, Mesh Shader, and Sampler Feedback.

The finishing touches

Everything else is just hard work on polishing the experience with Windows 10 20H1 before the RTM is signed-off and Microsoft begins the public rollout to production devices.

You can check out the full changelog in the box after the jump.

Windows 10 20H1 is supposed to be finalized in December, according to information that reached the web recently. If the same release schedule is maintained, this feature update should go live for everyone in April or May next year, but these dates are yet to be confirmed by Microsoft following the adoption of a new development cycle for Windows 10.

There are just three known issues in this build, and this is living proof Microsoft is making good progress towards finalizing this feature update. One of the bugs concerns BattlEye software compatibility, which Microsoft has already confirmed in the previous build for Fast ring insiders.