In an interview with CNBC last evening, Terry McGraw, CEO of major publishing firm McGraw-Hill, confirmed not only that the company would offer its books for Apple’s upcoming tablet, but that the device runs iPhone OS. When asked about rumors that the company had been working on getting their textbooks ready for the tablet, McGraw responded, “Yeah, Very exciting. Yes, they’ll make their announcement tomorrow on this one. We have worked with Apple for quite a while. And the Tablet is going to be based on the iPhone operating system and so it will be transferable. So what you are going to be able to do now—we have a consortium of e-books. And we have 95% of all our materials that are in e-book format on that one. So now with the tablet you’re going to open up the higher education market, the professional market. The tablet is going to be just really terrific.” A video of the interview appears in embedded form below; McGraw’s comment about the tablet begins around the 2 minute 50 second mark. [via Mac Rumors]