This is excellent news. I hope they will have a long price fight with CO serving CGN and I know CO has problems to fill up this flight anyway. One of them will loose
I have my doubts that LH will be able to sell all seats as well with basically three flights a day, FRA, MUC and DUS, (MUC and DUS A343, FRA A333) plus the business jet out of FRAl. Maybe they realized that EWR is way more convenient than JFK...