There are three notes that reference each other with regards to BCS functionality on HANA: 1600929, 1648413, and 1531022.
If I read them correctly, SEM-BCS 6.34 on SAP HANA (currently in revision 25) has been in "productive usage" since November 16, 2011.
P.S. I'm posting this also to test functionality of "Document" on SCN, so feel free to add your own opinion.
