This isn’t an April Fools gag, it was posted on the official Sims 3 Facebook page with the title “What’s going on in this Picture?”  It of course belongs to Generations as it includes the spiral staircase, stroller…and a new bed design.  Also, it appears to be some sort of gameshow setup…

https://i0.wp.com/farm6.static.flickr.com/5228/5580756369_3de4acd8fc.jpg?w=1080