I am assuming there will be Summer items on sale....There is usually a ton of stuff on sale at the Gucci stores but you have to go there before they actually go on sale. They Pre-sell their items.. So what I did was I went a few days before the sale started, chose my items and they mailed it out to me the day the sale started. If you go the day the sale starts, usually it's a madhouse and a lot of the good stuff is gone because it has been presold.. They send out a postcard a few days before the sale so you know when it's coming... I usually find that Neimans and Sak's go on sale before the actually Gucci store, and their discounts go deeper.. If you already knew this, sorry that I rambled on and on! I could talk about bags forever!
Usually the first or second week of December. I think presales are the first week and the sales are second week.