Hi Andres,
The SDK documentation that ships with the Hana version of SBO is identical to the one for MSSQL. As far as I'm aware, the objects and properties in the UI and DI APIs are identical.
One area that is different is direct SQL scripts (eg using the RecordSet object to read from the database). Hana is case sensitive for field names and also requires double-quotes around the field name.
http://scn.sap.com/docs/DOC-39120
There's a migration tool, available from SAP, that's supposed to help with converting existing scripts.
If you use Stored Procedures or other MSSQL database objects then you'll need to convert these to the equivalent object in Hana (or find an alternative solution if Hana doesn't support a particular object).
Kind Regards,
Owen