I take it to mean that this film will be solid Bale. No scene without him in it as the main focus of the scene, and as a result, he'll have more dialogue than even stars in other movies have because he won't be sharing screen time with other actors or plot lines.
It kind of sounds interesting from the point of view that it'll show just how involved Jobs was, in every last facet of the company, and how he was understood as the very heart of Apple. Nothing happened without Jobs's say so or input. He *was* Apple... or so the overarching belief was among people.
OTOH, with that much focus, I'm worried it'll come off as more of a stand-up comedy routine or keynote or speech. I don't know how Sorkin will build an actual *plot* if the focus is so narrow. It'll be an interesting thing to see, even if only from a film making/screenwriting perspective. We all know there's no issue with the acting abilities. This is about if Sorkin can pull off a compelling story with a really tight focus seldom seen in movies.