Preset Seasonal Home Decorations?

I don't think this is known at this point. However, it should be noted that in The Sims 3 Seasons this was possible with a festival lot marker they made for the parks in-game. However, because The Sims 3 was open world and it's intensive on the game to use it too much, they hid it behind cheats. I still use it for some of my lots, though. lol

My point is, in TS3 it was possible. They're really hinting at it here, and it might actually be something without cheats this time. However, we just don't know at this point.