> Do you know if there are some changes in german, too?
Yes.
> After installing TeXLive I ran some babel test files and I noticed
> there was a little difference, but I had no time to investigate yet:
>
> - su-per-ca-lifra-gi-li-sti-co-ex-pial-i-do-cious
> + su-per-ca-lif-ra-gi-li-sti-co-ex-pial-i-do-cious
This is not a German word. It's not in the list of words used for
generating hyphenation patterns. You can thus expect that its
hyphenation is (rather) random.
I suggest that you use a German word for testing German :-)
Werner