SHD-16P1S firmware GS07 released

A new firmware version was released for 16P1S.

http://www.liteonit.eu/APPS/download_list.php?s_category_id=2&product=SHD-16P1S

Now, what could be the changes?
What could be the changes to a dvd-rom’s firmware anyway? One or two updates are reasonable, even though the manufacturers feel bad to release a changelog, but this drive reached the 7th (am I wrong?).