Tomorrow's workforce is today's kids who grew up on smartphones and tablets as their primary computers.

When these kids grow up, a "real computer" to them will not be a traditional laptop with disc drives, removable batteries, or user-upgradeable RAM/storage. Tomorrow's "real computer" will be more like today's Microsoft Surface, iPad Pro, or controversial MacBook.

Today's smartphones still have headphone jacks. The next iPhone reportedly will not.

Some will look at it as a step backwards. Apple sees it as a step forward.