German fansite Simway brought a few new details to the table from a presentation held Tuesday on The Sims 3 Generations.  Instead of a crappy translation from Google, I tried to decipher my take of what was said:

    • Imaginary sims see their sim-friend while they are a puppet and an actual imaginary sim.
    • Imaginary sims appear to have their own color
    • Only sims with imaginary friends can see them.  Switch to a different sim and the imaginary sim becomes invisible
    • Imaginary sims can be transformed into real sims, while being an imaginary sim, almost all interactions can be carried out.
    • New community playground – many recreational items for kids which includes a slide, climbing tower, sandbox, seesaw, swing and hopscotch field.
    • Strollers are fully useable and you can transport young sims from point A to point B
    • Treehouses make an appearance!  Children can play and interact with sims below by pouring water on them, as well as struggle against pirates.
    • New object – Bunk Beds.  There are bunk beds with 1 or two beds.  With 1 bed, you can place objects underneath them like sofas or desks.  With both beds, they can be used by up to two sims.
    • With pranks, neighbors can call the police if young sims play pranks on them.  Parents can punish them.
    • Sims can manipulate sinks and water will squirt in others sims face.
    • There is a water ride for the Sims.  It can be used by the whole family and pool is not required (I’m not 100% sure of this translation)
    • Sims can tell scary stories and some may have nightmares.
    • Wedding Arch object returns – Sims can cut the wedding cake together.
    • Dating returns to the game.
    • With the video camera, sims can make videos of themselves and watch them on their tvs.