You will receive a card in the box which will let you obtain a hard copy free of charge. I understand this will be for customers of AutoCAD 2007 worldwide. The AutoCAD User Guide is now over 1200 pages, the AutoCAD Command Reference that explains the commands is 1701 pages, and the AutoCAD Customization Guide is 296 pages.
The card in your product box for AutoCAD 2007 will direct you to www.autodeskbookrequest.com to place your order. Last year the free books took 3 days to get to me and they were not shipped across town to me.
There is also a book in the box called "Building Your World" which offers examples and tutorials on the new features.
All documentation is in the Help in the product as well as on the CD in PDF format on the CD at \Bin\acadFeui\docs\.