I am using this blog post to update people on my latest documents that are available on SCN now:
Latest update on BEx Query Elements supported in SAP BusinessObjects BI 4.x is available here:
Presentation outlining some important Best Practices for integrating SAP BusinesObjects BI 4.x with SAP NetWeaver BW and SAP ERP is available here
and also a slide deck which compares the different data connectivity options and the supported elements of a BEx Query, including the option to create a SAP HANA model based on your SAP NetWeaver BW InfoProvider or query:
I hope people find this information useful and that it helps on the integration of BI4 with BW and ERP and I am looking forward to your comments and feedback.