Full-screen map, interface elements overlaid on top of the map, the same search box and zoom buttons. It's consistent with the new Google Maps interface.
"We're launching Google Maps Engine Lite (Beta), so any mapping enthusiast can now create and share robust custom maps using this powerful, easy-to-use tool. You can import small spreadsheets of locations onto a comprehensive map, visualize those places through a variety of styling and drawing options, and organize and compare up to three different data sets for your non-business purposes," informed Google back in March.
Here's a diagram from a Google Maps support page that shows the current interface:
And here's a similar diagram for the new Google Maps:
The new interface is a lot cleaner and there are fewer features, but it's not clear how many features are missing.