Hello,
Yes, multiple display outputs are supported by Windows 10 IoT Enterprise, including the LTSC 21H2 version. The number of displays that can be supported depends on the hardware capabilities of the device.
As for alternative versions of Windows 10 IoT, the support for multiple display outputs may vary depending on the specific version and the hardware capabilities of the device. However, most versions of Windows 10 IoT do support multiple display outputs. It's always best to check the hardware specifications and the documentation for the specific version of Windows 10 IoT you are using to determine the number of displays that can be supported.
Best Regards,
Hania Lian
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