The measures regulating the entry into Italy after stay or transit in third Countries have been updated. The new regulation will be in force from August 31 and until October 25, 2021.
More info https://esteri.it/mae/en/ministero/normativaonline/decreto-iorestoacasa-domande-frequenti/focus-cittadini-italiani-in-rientro-dall-estero-e-cittadini-stranieri-in-italia.html