This is a copy paste of the post from the bakery story forum, because the issue is exactly the same
"iOS Christmas Version Doesn't Work!
I got the update for the Christmas version for iOS but nothing besides the icon and the loading screen changed. No new scenery, no new quest, no unlocked Christmas recipes on the oven and definitely no Christmas ovens. It seems that a lot of people are having this issue (at least on the Discussion Forum). I'm concerned because from the Android screenshots I see there's a timer on these recipes (10 days) but it's alreadyose recipes while Android get full 10 days??
And yes I'm updated to the latest version of iOS and game. I've hard restarted everything and still, only the icon and the loading screen have changed. And no I do not have the old Christmas version still installed or anything."
would like to add, screen shots from players on android, have the new decorations, outside scenery and new recipes.
I hope we can get some kind of answer on this issue soon