Hi Black-Dragon

for the time being the official language is English hub soft.
At present, the soft hub is in beta and is undergoing continuous development and there are things more important and basic to be resolved and we say to improve.
Certainly later on, it will be possible soon, will be implemented even more languages or maybe a hubsoft with the most appropriate, or indeed multilingual.
In any case, English is now international. In any event for details or further guidance please ask a FlipFlop.