I just checked the GMS website and saw the announcement of the first balancing patch! Here’s the info, it looks like there were no noticeable changes from the KMS one:
This is only part one of the balancing. There is still much more to come!
Link (Official Site): http://maplestory.nexon.net/News/News.aspx?boardNo=100&contentNo=007xK&pageIndex=1