In previous years, Apple called the promotion the ‘12 Days of Christmas’. The new name doesn’t quite have the same ring to it, but I presume it alienated people who believe in holidays other than Christmas, so they changed the branding to be more inclusive.
A by-product of dropping the Christmas branding is a new look for the app itself. Gone are the holly and snow decorations … replaced by ambiguous gold circles. The app looks pretty good, but the icon is sloppy. It’s not flat enough for iOS 7 and adorns a weird (uneven) edge effect at the top-left and bottom-right corners.