LH will not do it. That's no surprise. They prefer to route Berlin passengers through their own existing hubs.
However this leaves some of the few developing markets in Germany to other competitors. At least the airport to do it will finally be there now. It will not be a formal legacy airline fortress hub it will be p-t-p flights by different players. But with spoke routes connecting throughout Europe. And this is what makes LH nervous. Remember when EK wanted traffic rights to fly to Berlin?