Hi Christoph,
For the current status for multiple applications (or scenarios) running on one production SAP HANA appliance where SAP Business Suite powered by SAP HANA (ERP on HANA, CRM on HANA or SCM on HANA) is installed, please see note SAP note 1826100
http://Service.sap.com/sap/support/notes/1826100
Support for multiple SAP HANA based applications running with a single SAP HANA system is described in the SAP note 1661202
http://Service.sap.com/sap/support/notes/1661202
Regards,
Nikhil Joy