Instantaneous communication between earth and mars maybe? If so it certainly solves some problems.
There is no communication, as there was no data sent from A to B. The article explains the experiment:
If you read this here qubit A, you may get 0 or 1. You don't know what it is because you never looked before. However if later you read the qubit B that is over there, you will get the same answer as at A.
As you can see, this does not transfer information, as you have no way to input it into the system. It's a set of two black boxes with the same content inside. You do not know what it is beforehand.
There is no FTL violation either - not any more than if you deal with two matchboxes that contain the same, unopened message. They "synchronize" instantly, but you still need to transport one of them from A to B - and even then it doesn't buy you much, as the message is a total surprise on both ends of the link.