Microsoft pushes new Windows 10 test branch to its Dev Channel testers

Microsoft is rolling out to its 'bleeding edge' testers the first new Windows 10 build, 20150, that may end up including features from the 'Iron' branch.

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A day after making its first Windows 10 20H2 test build available to a group of Windows Insider testers, Microsoft is pushing out its first build from a new test branch to its Dev Channel testers. (Dev Channel testers are those formerly known as Fast Ring and Skip Ahead Ring testers.)

On June 17, Microsoft made available Build 20150 to the Dev Channel. Microsoft officials have said that Fast Ring/Dev Channel builds are not tied to specific upcoming Windows 10 feature releases. In other words, the Dev Channel is testing a bunch of features which may or may not be included in a future Windows 10 feature release. However, today's test build is the first from the new RS_PRERELEASE branch, which is codenamed "Iron." Some of the features that are tested as part of this branch will likely end up in Windows 10 21H1, due out in the spring of 2021.

(GPU compute, WSL install and WSL update. GPU compute enables Linux binaries to leverage a user's GPU, which officials said will be a big draw for those doing machine learning and data science work inside WSL. The WSL install command lets users install WSL with a single command. And WSL update allows users to manage the Linux kernel version used by WSL 2 distributions. 

Microsoft officials said the new search box on the default app settings page. Microsoft officials say the search box performance should be improved with this release.