A new blog entry has been posted on TheSims3.com which explains some new features included with the recent game update:
Store Sets in the Game.
The newest and most popular sets from The Sims 3 Store are now featured in Buy Mode as Featured Store Sets! This feature allows you to find exclusive sales without leaving your game! You’ll notice that each room category has a new button that you can click to see the sets for that room. Once a set is purchased from Buy Mode, you can place the individual items directly from the set preview window. This eliminates the need to search for the set items in individual object categories.