In this IoT Central article, it explains that device templates are based on DTDL v2.
DTDL v2 supports arrays.
But in the Device Template builder, there is no option to choose an Array type. Is this coming soon? Is there a known workaround, I don't expect there to be a great visual component to go with this, I just want to ensure we can use this data type in our telemetry and that it is supported in the data export as well.