In the news section of the Sims 3 official website they put this:
Feeling Festive? Time to brush off those winter sweater's and celebrate with The Sims 3 Store!
Check back to the Store often as the festivities will last all-month long, including a special New Year's surprise!
Be sure to update your wish list before the celebrations begin, we would like to know what you are looking for this holiday season! Help us to spread the holiday charm by gifting other Simmers or by using the Store's Refer-A-Friend program, we'll be able to tell who has been naughty or nice...Who knows? Maybe be some Simmers will be lucky enough to Win Your Wishlist!
I am not sure how that will work.
Then on Facebook they posted an event. Here are the details:
"It's December and The Sims team is bouncing with holiday cheer! Share your WishList links on our Wall (Facebook or Event Wall) everyday and you could be randomly gifted by a SimGuru or another community member. Feel free to post your WishList every day until the end of the event, you never know if you have a secret gifter out there!
For those of you on Twitter, you could also @reply your URL to us here:
www.twitter.com/TheSims3.
Invite your friends to join us for this month-long gifting event!
Checklist:
* Update your WishList with the latest and greatest ITEMS of The Sims 3 Store.
* Post your URL on our Facebook Wall often until the end of the Event.
* Check your Private Messages to see if you were randomly selected to receive an item from your WishList!"
The event runs December 8, 2010 to January 11, 2011. I know I will be posting my wishlist everyday.