http://www.larian.com/forums/ubbthreads.php?ubb=showflat&Number=394638#Post394638This thread explains it all, coming from lar_q himself.
In Short words, each language patch version (german, english, French, etc) have diferent patch notes, even though they shared the same number at some point in time.
So English 1.03 != German 1.03 and so on.
The US patch version will be the patch version that will make all language patches version equal to the most recent, and from what i understand will have improvements not even the german version has yet.