Atelier Dusk Trilogy Deluxe Pack is an upcoming collection that packs in Atelier Ayesha: The Alchemist of Dusk DX, Atelier Escha & Logy: Alchemists of the Dusk Sky DX, and Atelier Shallie: Alchemists of the Dusk Sea DX.
Atelier Dusk Trilogy Deluxe Pack is on the way to PS4 and Switch in Japan on December 25, followed by a release on PS4, Switch, and PC in the west on January 14, 2020.
You’ll also be able to buy each game on its own if you just want a specific part of the collection.