Maxis is planning to integrate a creation exchange into The Sims 4, allowing players to directly upload and share content with other users.
“In The Sims 3, you were doing a lot of it through the Sims website – you could upload creations and stuff. We’re bringing all of that and making the experience in the game so people are able to connect with other people and grab somebody else’s house and try it out in their own lot. We have a lot more detail to get into in the next few months but it’s definitely a big part of what we’re working on.”
There are even whispers that custom content creators will be able to directly sell their creations within the game.