The specific version you mentioned——refers to a technical update of the European release:
: The "plot" typically revolves around Miis asking for your advice on social situations. These can lead to dating, marriage, and even having children who eventually grow up and travel to other islands. Tomodachi Life -Europe- -EnFrDeEsItNl- -Rev 2-
The European version famously includes both the Rap Battle and the Word Chain minigame at the fountain, whereas the American version typically only features the rap battle . Tomodachi Life -Europe- -EnFrDeEsItNl- -Rev 2-
Revision 2 fixes early bugs for smoother gameplay. Tomodachi Life -Europe- -EnFrDeEsItNl- -Rev 2-