Just thought of this issue, for all the EU fans.

Ep. 7 is going to come out and with it will be a bunch of tie in novels. These will be new extended takes on characters featured in ep. 7. Kinda like the prequel novels that centered on Obi Wan's training etc.

They are still coming out with EU novels but eventually these ep. 7 novels will take precedent. They are probably being written write now.

Are these novels going to be EU since they are after ep 6? Most likely they are starting an alternate timelline. So at some point Disney will have to announce the EU is done and this new timeline takes over. So Mara Jade will be erased from existence...

As Doc Brown would say Great Scott!