One of the most exciting upcoming changes in Windows 11 are tabs in File Explorer. With them, the app allows working with multiple directories without opening a bunch Explorer windows. Being discovered in Build 22572 as a hidden feature, File Explorer tabs were speculated to appear in the upcoming 'Sun Valley 2' update, which is Windows 11 version 22H2.
However, that's wrong. 22H2 is already a feature complete project. Currently, Microsoft is polishing what has been added, without doing major changes to the OS. The upcoming Sun Valley 2 update (Nickel/22H2) includes everything that Microsoft was planning for the initial release of Windows 11 (Sun Valley/Cobalt/21H2). Sadly, for a number of reasons some important features were cut.
The Sun Valley 3/23H2 update is a different story. So, Microsoft is preparing tabs in File Explorer for this release. That's why they disappeared in build 22579+.
But in the latest preview builds of Windows Server, you still will be able to enable tabs. That's because those builds are already based on the 23H2 codebase from the Copper branch. So it is still possible to turn on the tabs using the ViveTool.
A more consistent dark theme will also be part of the 23H2 update. As is still a work in progress, it is unlikely to see it in Windows 11 22H2. However, Microsoft may push it down to 22H2 with a cumulative update.
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