@B. Keller Welcome to Microsoft Q&A forum!
Device Update for IoT Hub is currently in preview. As you can see Creating a device update account is free of cost.
Below are the prerequisites:
- Access to an IoT Hub. It is recommended that you use a S1 (Standard) tier or above.
Supported browsers:
- Microsoft Edge
- Google Chrome
To answer your query, currently there are no updates on the pricing or until it goes to GA. I will further enquire and confirm the same.
Update: Device Update for IoT Hub will remain free while in Public Preview. Beyond that there will be a limited free SKU available, and there will be paid tiers with no restrictions.
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