McGraw-Hill CEO Terry McGraw blew the cover off the iPad story revealing on CNBC that Apple will announce a tablet device and it will have e-reader capability (surprise)!
We'll put our money on the fact that what really happened is that Steve Jobs did Terry McGraw a solid. The iPad as a textbook reader will be a nice, niche feature. However, when it comes to the announcement tomorrow, you aren't likely to hear much about textbooks. You may hear a lot about magazine and music publishers, tv/movie capabilities, and hear from other mainstream media publishers.
Our guess is that this is Apple's way of acknowledging someone who represents an important partner, but someone who will not be a focal point of the most written about product launch ever (someone look that up for me). So they give him some great publicity today and throw the blogs and media off the scent in the last 24 hours (when most leaks happen). Nothing more.