For those of you wondering, the preview will take place on April 12th. The website states:
Join The Sims 3 Producer Jennifer Lane as she introduces The Sims 3 Katy Perry’s Sweet Treats on April 12, 2012 at 10:00AM PDT. This is your chance to take a sneak peak at the vast range of décor items, furniture, and, of course, fabulous fashions and hairstyles, all inspired by Katy’s real-life clothing and props, plus a look at one of the three new spectacular venues. Don’t want to forget? Sign up for a reminder by entering your e-mail in the “Cover It Live” box to your right.