Earlier this year, The Wall Street Journal suggested that Apple is testing devices with different screens. Apple is looking at bigger screens for not only its iPhones but for its iPad line, too. One of the test panels ordered by Apple measures almost 13 inches. Does this mean we'll soon see an iPad Mega alongside the regular iPad and iPad Mini? Probably not this year. The appeal of a tablet with such a large screen is questionable. The iPad Mini is already cannibalizing sales of the full-size iPad because it is smaller and easier to carry around. An iPad with a 13-inch screen would be unwieldy at best, though it could serve as a better laptop or desktop replacement.