I'm sure most people have seen that the sims mobile has bunk beds now, which has lead to a lot of complaining that we don't have them in the sims 4 but this is actually most likely a good thing!
It means bunk beds are something the sims team is considering and it shows that they've been working on creating realistic animations for bunk beds. There's no way they'd work on creating realistic bunk bed animations for a mobile game and then not bring them to the main game, especially given how desired bunk beds are with sims players.
Ladders came out a month ago aswell, which is obviously another big part of bunk bed animations, it seems a logical next step to release bunk beds after this. This combined with bunk beds being released in the mobile game a month later heavily signals that they're most likely coming sometime soon, possibly even with the upcoming game pack.