Announcing Windows 11 Insider Preview Build 23590 (Dev Channel)

Hello Windows Insiders,

Today we are releasing Windows 11 Insider Preview Build 23590 to the Dev Channel. We are releasing ISOs for this build – they can be downloaded here.

What’s new in Build 23590

Natural Voices Previews in Narrator

We are introducing previews for natural voices of 10 new locales launched in September 2023. As a reminder, those natural voices include Chinese, Spanish (Spain), Spanish (Mexico), Japanese, English (UK), French, Portuguese, English (India),German and Korean.

These previews will allow the users to listen to the natural voices before downloading the voice model. Natural Narrator voices use modern, on-device text to speech and once downloaded are supported without an internet connection. Please note to listen to the previews, an internet connection is required.

To use one of the natural voices, add it to your PC by following these steps:

  1. Open Narrator Settings by pressing the WIN + CTRL + N hotkey.
  2. Under Narrator’s voice, select the Add button next to Add natural voices.
  3. Select the voice you want to install. You can install all voices, but you must install them separately.
  4. The preview will play automatically once you navigate through the list.
  5. If you like the preview , click on “Download and Install”. The new voice will be downloaded and ready for use in a few minutes, depending on your internet download speed.
  6. When the new voice has downloaded, in Narrator settings select your preferred voice from the drop-down menu in Narrator’s voice > Choose a voice.

FEEDBACK: Please file feedback in Feedback Hub (Win + F) under Accessibility > Narrator.

Enhanced image consumption experience in Narrator 

We are improving the image consumption experience with Narrator. There are two major changes:

FEEDBACK: Please file feedback in Feedback Hub (Win + F) under Accessibility > Narrator.

Changes and Improvements

[General]

[Windows Share]

[Nearby Sharing]

[Narrator]

For developers

You can download the latest Windows Insider SDK at aka.ms/windowsinsidersdk.

SDK NuGet packages are now also flighting at NuGet Gallery | WindowsSDK which include:

These NuGet packages provide more granular access to the SDK and better integration in CI/CD pipelines.

SDK flights are now published for both the Canary and Dev Channels, so be sure to choose the right version for your Insider Channel.

Remember to use adaptive code when targeting new APIs to make sure your app runs on all customer machines, particularly when building against the Dev Channel SDK. Feature detection is recommended over OS version checks, as OS version checks are unreliable and will not work as expected in all cases.

About the Dev Channel

REMINDER: The Dev Channel has been rebooted. Windows Insiders who were in the Dev Channel on 25000 series builds have been moved to the new Canary Channel. Going forward, the Dev Channel will receive 23000 series builds. Insiders who were moved to the Canary Channel and want to move back to the Dev Channel can follow these instructions to do a clean installation of Windows 11 and then re-join the Dev Channel to receive 23000 series builds.

The Dev Channel receives builds that represent long lead work from our engineers with features and experiences that may never get released as we try out different concepts and get feedback. It is important to remember that the builds we release to the Dev Channel should not be seen as matched to any specific release of Windows and the features included may change over time, be removed, or replaced in Insider builds or may never be released beyond Windows Insiders to general customers. For more information, please read this blog post about how we plan to use the Dev Channel to incubate new ideas, work on long lead items, and control the states of individual features.

In some cases, features and experiences may go out to the Canary Channel first before going out to the Dev Channel however the Dev Channel will provide better platform stability. As we get closer to shipping, some features and experiences will also make their way to the Beta Channel when they are ready.

The desktop watermark you see at the lower right corner of your desktop is normal for these pre-release builds.

*Availability of Copilot in Windows: Copilot in Windows in preview is being rolled out gradually to Windows Insiders in select global markets. The initial markets for the Copilot in Windows preview include North America, United Kingdom and parts of Asia and South America. It is our intention to add additional markets over time.

Important Insider Links

Before you update your machine, visit the Announcing Windows 11 Insider Preview Build 23590 (Dev Channel) | Windows Insider Blog today to view full details on new features, general changes, improvements, known issues and much more!