The Italian "Delphi Day" is usually the largest gathering of Italian Delphi developers of the year. 

All information (and the signup form) available in Italian at

The event is made of main conference day (with a limited admission cost to pay for the food) and a day pre-conference tutorials. There will be also a follow-up day with a conference focused on an open-source business management solution, called GO, as described on the group web site