EMA Analysis and Consulting published a research article that covers all the new features included in Dremio 4.0.
Here is the abstract: “On September 17, 2019, Dremio released Dremio 4.0 to speed data lake queries and further its support of federated queries from data in relational and other sources. Additional features make it easier for organizations to run analytics primarily against object storage, and can significantly lower costs for organizations currently facing the rising cost of online databases and big data platforms.”