Being confronted with decreasing margins and a rising customer demand for integrated solutions, manufacturing companies integrate complementary services into their portfolio. Offering product-service packages (consist- ing of products and services) demands for set- ting up integrated product-service systems, which incorporate the coordinated design and provision of products and services. Conceptual Modeling is an established approach to support such efforts. This paper evaluates the current support of reference models and modeling languages for setting up conceptual models in the area of product-service systems. Consecutively, some perspectives are presented to induce further re- search in this field.