As this question comes up now more often here a short overview when EM is released on HANA:
EM 9.0 is available for HANA with SP03 on Netweaver 7.40 stack.
You find this information in note:
1826531 - Add-on compatibility of SAP NetWeaver 7.4 - ABAP
EM 9.2 is released from the beginning for HANA.
