Is it just me which have the feeling or will DTG release routes from Poland too? On the picture for TS 2020 I see a flag on the castle where the 440 loco is which looks like the Polish flag.
It's the flag of the city of Nuremberg, one of the termini of the exclusive route. I suspect licensing from Polish train companies and a player market in Poland would dictate whether or not DTG ever decide to make a route there.