It is a little more restricted than just 30k tracks.... as this post from the Roon forum says.

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Just to be clear about Elac's upcoming product, the Discovery is designed to be a self-contained device, and has a built-in limited version of Roon Server installed on it. It won't have all of Roon's features like lyrics, DSD and high-resolution formats, or the ability to stream to PCs, AirPlay speakers, and Roon Ready devices from our partners. The license is tied to the device rather than to you as a customer, so it's not a Roon Lifetime license, either.

The purpose of our partnership with Elac is to provide a simple, turn key version of the Roon experience, but there will always be features in our Annual and Lifetime memberships that are only available by upgrading.