This page-turning patent is ludicrous. For something to be patentable, it has to have novelty. There was nothing novel about an animated page turn at the time Apple filed its patent. iBooks was not even introduced until mid-2010. By that time Stanza with its very nice animated page turn had already been in use for years and years.
I agree with those who say the patent won't stand up in court. The U.S. patent office is probably incapable of vetting patent applications in order to determine whether the technology/process is novel or has already been included in another patent. They leave it up to costly litigation to sort these things out. As some have suggested, there may also be some monkey business going on here too.