A few brand-new challenges have begun in both Pokémon Shuffle and Pokémon Shuffle Mobile. First is a new stage featuring Granbull (Winking), which runs until January 9, 2018. Next is a stage for the Pokémon Arcanine, which otherwise appears in Expert stages. It runs until January 2, 2018. Next is a Kyurem competitive stage, which runs until January 2, 2018. Finally, the Buzzwole, Meloetta Pirouette Forme, Hitmonlee, Silvally and Keldeo Resolute Form stages have begun repeat runs. All of these additions require the software version 1.4.35 to download.
Source: Serebii