People weren't too happy when EA announced that The Sims 4 wouldn't have pools but the missing feature has now been introduced to the game and the expansion is free too.
In the trailer below we see various pool types, which can be customised to match your Sims' home. The trailer also makes reference to the fact that killing your Sims can be one of the most enjoyable aspects of the game, and we see a group of them drown when their pool is walled in. Sadly, we don't get to see Death's swimwear.
There's no news yet on whether another notable missing feature from The Sims 4, toddlers, will be making an appearnace in a future update but this is a good start.