Microsoft is now rolling out Windows 10 build 17639 for devices enrolled in the Fast ring using the Skip Ahead option. This new release is a minor update part of the Redstone 5 development, and it brings a number of new features and improvements.

Windows 10 build 17639, according to the company, introduces a bunch of improvements for Sets and Settings app changes.

Alongside the improvements, build 17639 ships with several fixes and known issues that you can check at the Windows blog. In case you missed it, you can read all the changes for Windows 10 build 17634 in this article.

What’s new on Windows 10 build 17639

Here are all the changes Microsoft is making available with this new preview of Windows 10 version 1809 expected to release in October 2018:

Sets

In this flight, Sets, the tab experience for apps, documents, and websites, is getting a slew of improvements and tweaks, including:

  • Drag and drop: You can now drag an app tab around within the Set or combine tabbed app windows into Sets.
  • Alt + Tab: It’s now possible to use Alt + Tab keyboard shortcut to circle between open tabs. (If you have multiple Microsoft Edge windows in a Set, only the one most recently accessed will be visible in Alt + Tab.)
  • Sets context menu: If you right-click a tab, you’ll find additional options, including “close other tabs”, “move to new window”, and “close tabs to the right”.
  • Sets tab context menu

Previous Tabs

In the Previous Tabs experience, you’ll find these changes:

Drag and drop: You can now drag an app tab around within the Set or combine tabbed app windows into Sets.

Alt + Tab: It’s now possible to use Alt + Tab keyboard shortcut to circle between open tabs. (If you have multiple Microsoft Edge windows in a Set, only the one most recently accessed will be visible in Alt + Tab.)

Sets context menu: If you right-click a tab, you’ll find additional options, including “close other tabs”, “move to new window”, and “close tabs to the right”.

Sets tab context menu

  • You can now pick and choose which Previous Tabs you want to restore, instead of only being able to restore all tabs.
  • Sets Previous Tabs
  • You can now restore Previous Tabs from any type of activity.
  • When you open a document that previously had tabs, a prompt will appear offering to restore those tabs, and the Previous Tabs button will be in the filled state. If it’s not a document, a prompt will not show automatically, but you’ll know that there are tabs available to restore because the Previous Tabs button will be in the filled state.
  • There’s a new animation when there are no Previous Tabs available to be restored.

File Explorer

As part of the new Set improvements, File Explorer is also getting several new shortcuts:

You can now pick and choose which Previous Tabs you want to restore, instead of only being able to restore all tabs.

Sets Previous Tabs

You can now restore Previous Tabs from any type of activity.

When you open a document that previously had tabs, a prompt will appear offering to restore those tabs, and the Previous Tabs button will be in the filled state. If it’s not a document, a prompt will not show automatically, but you’ll know that there are tabs available to restore because the Previous Tabs button will be in the filled state.

There’s a new animation when there are no Previous Tabs available to be restored.

  • You no longer need to hold the Ctrl key on the new tab page to launch a File Explorer window in a tab.
  • You can now open new tabs using File Explorer menu.
  • File Explorer menu new tab option
  • Right-clicking on a folder, the context menu includes an “Open in new tab” option.
  • A new Ctrl + T keyboard shortcut to open a new tab when a File Explorer window is in focus. This is in addition to Ctrl + N to open a new window, and Ctrl + W to close the window or tab.

Sets settings

In this Redstone 5 flight, Windows 10 is updating the Sets settings page (Settings > System > Multitasking), and in addition to an option to enable and disable the feature, you can decide the Alt + Tab action, and it’s possible to specify which apps don’t use tabs.

You no longer need to hold the Ctrl key on the new tab page to launch a File Explorer window in a tab.

You can now open new tabs using File Explorer menu.

File Explorer menu new tab option

Right-clicking on a folder, the context menu includes an “Open in new tab” option.

A new Ctrl + T keyboard shortcut to open a new tab when a File Explorer window is in focus. This is in addition to Ctrl + N to open a new window, and Ctrl + W to close the window or tab.

Microsoft also notes that on build 17639, you’ll notice that Sets looks a little more polished, and switching between tabs is a lot smoother.

Additional improvements

Alongside the improvements on Sets, on the Settings app, the Bluetooth & other devices page now display the batter level for supported Bluetooth devices.

Starting with Windows 10 build 17639, Control Panel no longer includes the settings to adjust brightness, but these settings can already be configured in the Settings app that will eventually replace Control Panel.

Download Windows 10 build 17639

Although there are no ISO files for Windows 10 build 17639, the update is available immediately through the Fast ring with the Skip Ahead option for PCs. This preview build will download and install automatically on your device, but you can always force the update from Settings > Update & security > Windows Update and clicking the Check for updates button.

You can also check out these resources:

  • Windows 10 Redstone 5 (version 1809): All the new features and changes
  • Windows 10 version release history tracker