There were a lot of Etruscan cities, just a few were destroyed by the Romans, Veium and Volsinii (Orvieto) come to mind, most were integrated as "allies" and then gradually given Roman citizenship until there was total integration, this discovery might move this integration a few centuries later.

I've been reading a lot of articles but "Flavian dinasty" was the most precise thing i found about the most recent of those statues and inscriptions, almost all articles just say I century B.C. So the answer is probably yes but we should wait further news.

Yes it is, but historians and archaeologists use to think that by the II Century B.C. - I century A.D. period (from which the bronzes are) Etruscan culture and language had already died out, Etruscan influences on roman culture have always been dated in the Monarchy and early-mid republic, some of those statues are from the Flavian period.