You can use it for both.
It can be used for dashboarding in that you can display information from different datasources in the same report (which you could not do in previous products such as Impromptu). You also have a great deal of flexibilty in layout and can provide the information in various graphical formats as well as data listings.
You cannot use OLAP data as a datasource in this version, and you can't structure metrics in the way you can in Metrics Manager (or at least, not without a lot of work), so it's probably not the only tool you would want to build an overall scorecarding solution, but it can certainly form part of one.