Interesting stuff. That means that the Fokker 70 will get some modifications. The only Fokker 70s around with these modifications are the three ex Air Littoral birds.
As far as TXL is concerned, I think we will have to wait and see. Three 146 flights seems to be quite a lot of capacity, given the lacklustre performance of Berlin routes in the past. Must be fourth time the route is tried after Conti, Eurowings and Lufthansa Mk. I. Probably an ATR42 would be better suited, but maybe too long a route for a prop (same distance as LCY-MUC where the (fast) D328 prop has been replaced by a jet)