Font Version and Update Information

Hi

Where can I find out the current version of the Arno font family and the changes that have been made since its initial release? I am needing to add characters to the font for foreign-language books, and when I compile the font (using FontLab VI), I get lots of errors about kerning table sizes, duplicate entries, etc. If those issues have been corrected, I would like to purchase a current version.

Thanks.