It will be a standalone product, but It will have all the components that are in the Material Kit. So you will use Material Kit when you create the Presentation page or landing page of your product and then on the admin part you will use Material Dashboard. They will have the same design line so there will be consistency in the overall design of your web app.

You can start developing with Material Kit, then when we release the Dashboard you just change the CSS with the new one and also get the new Structure of the page (Sidebar + Main Area).