Yes,

After learning a second language, the third, forth... are easier even if they have nothing to donwith each other. Learning other languages a lot of times teach you thing of you native language, because you never look for the logic and the relationships behind it.

Also it should develop some cognitive strutures is your brain or something: my daughter was born in a different country ultill she was 2 years old. In the kindergarden she undertood perfectlly the local language and at home our native language (she had some trouble speaking as she was mixing both languages). Then we came back and 6 months later, I've check and she had everything forgotten. But now she is learning english in the school at an amazing pace. Way faster than the other kids, and I am pretty sure is because her brain structure is different, somehow thanks to those 2 years she lived abroad