Commercial iBooks textbooks are a marketing head fake. They're the equivalent of carbon fibre buggy whips. iTunes U is the game changer. Put iBooks Author and iTunes U into the hands of great teachers, put iPads in their students hands, put them all in a room together then step back and see what happens. That's the ballgame.
Fraser Speirs is one of the leading experts on using technology productively in the classroom. This goes beyond buying hardware & providing technical support; it includes writing curriculum, reinforcing basic reading and math skills, and training teachers. I couldn't agree more with his comment about iTunes U - it's much closer to my imagination of "the future of education" than iBooks, which reminds me of the Pat the Bunny app that Lev loves - lots of shiny, but very little meat on the bone.