As Promised, Microsoft has released the first Insider Preview of Windows 11 for testers on June 28, 2021. 22000.51 update, which will be rolled out as a 64-bit version in various languages and SKUs for Windows Insiders. To get this build, the PC must officially meet both the Minimum requirements & Supported Processor, most important is to have a Microsoft account which has to to be registered to the Dev Channel of the Microsoft Windows Insider program
Here is the official announcement from Microsoft :
How to download and try Insider Preview build today
In this tutorial, we will share steps to install Windows 11 Insider Preview on your PC right now.
1. Your PC must be running a licensed version of Windows 10.
2. Register to join the Windows Insider Program, skip if you have already registered.
3.Go to Settings > Update & Security> Windows Insider Program.
4.Click on Link Account, and select the Microsoft account on the PC. Click on the Continue button.
Note:Choose Dev build as of now Windows 11 is released only for Dev channel
5. Read the Privacy Statement and terms, and click confirm. Click Restart Now.
6. After restarting,Go to Settings > Update & Security > Windows Update. Click the Check for updates button. You should see the latest Insider Preview build based on the settings you selected.
Here some screenshots of Windows 11 :
Downloading update will depend on your Data speed
For more: Check whether your laptop, desktop is compatible with Windows 11