Rumors about Apple building a very large iPad have been unavoidable for seven months. But does a giant iPad make sense?Other companies have tried to sell large-format touch tablets, but these have been universally rejected by most consumers.So are the rumors really true? And, if so, what is Apple planning?The giant iPad rumorsA Korean publication called ET News started a rumor on May 28 that Apple was testing an iPad with a 12.9-in. screen, measured diagonally. (Apple's current biggest iPad models have 9.7-in. screens.) That screen size is roughly the same size as some laptops, including Apple's 13-inch iPad Air. (The blog iMore.com posted some accurate comparisons showing just how big a 12.9-in. iPad would be.)That report
