What’s New in Mari 4? Mari 4.0 is all about creating a Mari that’s easier to use and learn. Get new projects up and running faster, enjoy more flexible and configurable exporting, and navigate around more easily. The UI has seen sweeping improvements, and there are a raft of new workflow enhancements including a new drag-and-drop color fill feature for faster painting, and a more intuitive workflow for creating custom brushes. And that’s on top of more efficient core functionality!