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 http://www.delphiedintorni.it/delphiday2010.html.
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 www.gestionaleopen.org.