Seeing that this is a future route comning later down the line,i looked it up and noticed it uses full size deisels to pull passenger trains and maybe frieght as well,so might this be the frist german route with a full size deisel loco?
The route is coming with the MRCE BR 182 and the DB BR 112. There is one mainline diesel allegedly developed by DTG. No info on which route will be tied to. As we say in this forum: If it's not on the roadmap...
Maybe it doesn't really matter you can run any german electric loco on any route,no overhead wires required.