There’s an A4/Letter-sized hole in our lives
Apple may or may not be developing a 13" iPad. Whether or not this is true in the short term, it’s inevitable in the long. There’s an A4/Letter-sized hole in our lives. It’s what our bags, desks, offices, bookcases, etc. are built around. And for good reason, it’s a solid trade between real estate and portability.
Not that iPad Minis and “Classics” won’t continue to outsell hypothetical larger siblings. But A4/Letter is the standard of the knowledge class.