The Sims 4’s world limitations are something which caused concern about the possible Seasons expansion ever since The Sims 4 launch. Most were afraid that the development team wouldn’t be able to introduce seasons to already available worlds in The Sims 4.
Today, SimGuruMegs shared a relieving piece of information on Reddit, saying that they would never confine Seasons to just one world.
We’ve gotten this question before and no, we would never confine seasons to a single world.
In case you don’t know, The Sims Team had a decision to make during The Sims 3 Seasons development: to make 1 world with all Seasons features or to bring Seasons to all other previous worlds.
With this information provided by SimGuruMegs we can probably expect all worlds we have so far to be introduced with the concept of Seasons.