Based on the preparations made by Borussia Dortmund, it's not impossible that they will be the winners of the Bundesliga for the next season
Its also not impossible that others maybe will win the German League in the coming season , its possible that Leipzig and Leverkusen are also into the race with,
Dortmund and Bayern Munich for the Champions , i dont know how Frankfurt will be doing or others but that are the 4 Teams i guess that will fight for.
You cant say anything for now at the friendly games that a few of them have done even they have won them..