A few brand-new challenges have begun in both Pokémon Shuffle and Pokémon Shuffle Mobile. First is a new stage featuring Toxapex. This stage runs until December 19, 2017. In addition to this, a new stage has begun for Fennekin (Winking), which runs until December 12, 2017. Next is a new Pokémon Safari, which includes Morelull, Cutiefly, Shiinotic, Flabébé (Winking) and Floette (Winking). It runs until December 19, 2017. Next is a Shiny Mega Gardevoir competitive stage, which runs until December 12, 2017. Finally, the Salazzle and Incineroar stages have begun repeat runs. All of these additions require the software version 1.4.33 to download.
Source: Serebii
Pokémon Blog 