Materialize has tackled the hardest problem in data warehousing, materialized views, which has never really been solved, and built a solution on a completely new architecture. This solution is useful by itself, but I'm also watching eagerly how their road map [1] plays out, as they go back and build out features like persistence and start to look more like a full-fledged data warehouse, but one with the first correct implementation of materialized views.
[1] https://materialize.com/blog-roadmap/