[Hall of Famer]

@ Gigi:
These are all columns in table prefix_adoptables. You are always encouraged to install a demo site of Mys v1.1.4 on your server to see what changes are made for database tables. ^^

@ Chibi:
There was no v1.0.x series 'cause RA was lacking too many features before compared to MA. The v1.1.0 release was pretty much like upgrading RA to MA, while future releases will distinguish Mys completely from MA. XD

@ Fadillzzz:
I think it depends on the addons you use. By saying Heavily modified site, I'd assume you use somewhat of a different adoption system(like your random adoption script), which is simply impossible to update through upgraders. For users with my evolution script, however, its completely possible for them to use future advanced upgraders(it is still using the same levelup system, just a new function evolution is defined). What it will possibly do is to open user's current php files such as doadopt.php and levelup.php to add a few lines at certain location of those files.