What happens if I buy a new device that does not meet the minimum requirements and cannot be upgraded to Windows 11?

Devices that do not meet the minimum requirements will continue to run Windows 10, and Microsoft will continue to support Windows 10 security updates until 14 October 2025. Please refer to the Windows 10 lifecycle documentation. https://docs.microsoft.com/en-us/lifecycle/products/windows-10-home-and-pro