Diablo 3 will not require Internet connection on PS3, PS4.
That explains why it took a year to come out. They couldn't get it to work always on (or were forced by the console makers to have it be standalone), so they migrated the AI to the client. Just patch the PC version, and all will be forgiven.
"The worst of it all is i used to ENJOY getting excited for big titles like this, but these publishers just keep ruining my love for this wonderful hobby with their endless fuckery." - Sempai