It's going to be digital!
Yes, in my personal "Beyond" scope I can foresee the future of the World's Most Popular Role-Playing Game and it will be "online". Physical books, may be optional? Why read a book when an app can do it all for you? Generate your character using an online app, including background and a portrait - maybe even download a 3-D printable mini too! And DMs can forget about printed adventure books. No reading for session prep, either. Just follow the prompts on your device app and plug in a few responses during play. There may even be video "cut scenes" you can use to impress your players!
Character sheet - it's on your phone app.
That spell you want to cast, the description - on your app.
Dice - just use your app!
The adventure module - it's on the DM's device.
Everything you need to play The World's Most Popular Role-Playing Game will be right at your fingertips - provided you have the app.
Almost no reading will be required.
Those of us with an active imagination can already see where this trend is headed.