Locating 'Enhancement Rate Tables'

Recently Nex/Dev have done a significant overhaul of the Enhancement System, and I'm trying to establish what these new tables are / if the old information is still accurate to begin with.

So, I was wondering if anyone knows if the 'Enhancement Tables' are stored in the actual game files (and if you happen to know where they are / used to be). Failing that, does anyone know how all the rates were determined the initial time?

Any information on this subject is appreciated (even speculation about how this information could be attained), thank you for reading.

This information is stored in the heroes.db3 file.

U can check the herodb web