Do not email them yet, if they are waiting to tell you it usually means that they are not sure of the situation themselves. I have no idea what the French department is like, but I can assure you that as a university overall Berkeley supports many, many, international graduate students. So without knowing the French department, but knowing the university as a whole I'd say your chances are good. So relax and enjoy your acceptance for now! Don't worry too much yet.
FYI: San Francisco (of which Berkeley is sort of part - it's all the bay area) is the highest priced housing market in the U.S. So look very carefully at cost of living if you are accepted to more than one U.S. school! Berkeley's cost of living is at 225%, so 125% higher than average.