It's available in your region. Only other requirement is that the workspace needs to have Unity Catalog enabled - is that the case as well?Otherwise please contact your Databricks account team or open a support ticket.
Serverless DLT pipelines are currently in PrPr (Private Preview). Thus, you will not see this checkbox if you are not part of this PrPr. To learn about enabling Serverless DLT pipelines, contact your Databricks account team.
