Not supplying the Reference Manual and Data List in hard copy format along with the keyboard has been the norm for Yamaha for many years, so I can't see them changing now!
When I brought my Tyros4, I downloaded these manuals and had the Reference Manual professionally printed. Since then I have hardly opened the printed copy!
Instead I prefer to use the PDF versions because you can use the search function in a PDF reader, rather than rely on Yamaha's often poor indexing. Often the information that you are looking for is there, but not adequately indexed, so people don't find it! Searching the PDF can prevent this.
PDF manuals also allow changes to be made at minimal cost, allowing for errors and firmware updates to be taken into account. For example, the Genos Reference and Owner's Manuals and the Data List are currently on release PO-D0, so if you are currently using PO-C0 or earlier, you should probably upgrade.
Of course it may be that Yamaha are well aware that many owners never even open the Owner's Manual, so providing the others in hard copy would be a waste of trees!
Regards
Ian