Certainly the majority will be stuff that we won't even notice exists (all the kids things), but the novels and comics will be of some interest, as this is newly uncharted territory.
We can probably expect at least a few adult novels and comics that will fill in the gaps, and likely even more in the future. The article said they're working with the film's screenwriters, so I'm sure these stories will be carefully crafted by the new story group so as to not make any messes. Making up the history of post-ROTJ is especially important now, much more so than what happens in between the OT movies (where the new comics have been taking place).
I probably won't delve into any of this material until after I see the film and figure out what stuff is worth investing in. But it's cool to know that there'll be a new batch of content for the empty spaces of the new canon.