This patch will update your game from 1.11.7 to version 1.12.7. This game update includes and fixes the following:

This game update enables dynamic ad serving capabilities in The Sims 3. However, there are no immediate plans to activate any content of this kind. The Sims 3 EULA has further details. See http://www.ea.com/1/product-eulas.
Lights placed on residential and community lots will now properly display onto the neighborhood
Sims may now walk and stand on bridges
Players who play The Sims 3 with game modifications can now create a folder in which to place their game modifications. The folder should be located here: C:\Documents and Settings\YourComputer\My Documents\Electronic Arts\The Sims 3\Mods
When Mods are placed in the official Mod folder, a notification will appear to remind players that Mods are installed.
Placing Mod packages into the Mod folder is an officially sanctioned way to bypass assembly signing verification. The Resource.cfg file must be placed in this folder in order for the modifications to work correctly.
When Mods are installed that are incompatible, the player will receive a message notifying them of the error.
Additional bug fixes to existing features
Edit Town Mode

Players may now add, delete, and move residential and community lots from the Edit Town menu
Players may now add, delete, and move neighborhood decorative objects from the Edit Town menu
Players may now purchase and upgrade neighborhood community lots using the new Real Estate system via the Computer
When using the Library in Edit Town, lots will now display their venue type (i.e. Park)
Gameplay Changes

Story Progression has been improved to prevent Sims required to complete Opportunities from changing.
Sim genetics have been improved so that children now better reflect their parents� skin tone and hairstyles.
Sims can unlock outfit choices and share them with household members when using the �Plan Outfit� interaction on the Dresser.
Build/Buy Mode

Players may now use Create a Style on Ceilings or add and delete them when in Build Mode
Players may now use Create a Style on the edges of floor tiles
When placing walls, rooms, foundations/decks, floor tiles, roofs, pools, fences, and basements the measuring tape tool will display to aid in more precise building.
Wall Covering sets can now be found in a tab in Build Mode
Players may now manipulate the roof pitch for individual roof sections when in Build Mode
Sculptures can be found in a new Sculpture sorting category when in Buy Mode
Create a Sim

Players may now use the Tattoo feature to customize Sims when in Create a Sim
Players may now select the Fianc�, Girlfriend, and Boyfriend relationship settings when in Create a Sim
UI & Controls

The user-interfaces for Sim View and Map View have been merged to provide more control and consistency between the two modes.
The Opportunity interface has been improved to clearly outline the fiction, gameplay objectives, rewards, and Opportunity location for all Opportunities and Adventures.
World Adventures

Certain Adventures and Opportunities will properly display in the Opportunities Panel when traveling between worlds