The three different Steins;Gate games are being compiled under one title, Steins;Gate: Divergencies Assort. Mages has confirmed this via their Twitter page. These three games include Steins;Gate 0, Steins;Gate: Hiyoku Renri no Darling, and Steins;Gate: Linear Bounded Phenogram.
While the original Steins;Gate has already been brought to the Nintendo Switch as Steins;Gate Elite, if you wondering. Moreover, the game will also include a new short story as part of a special book. Lastly, the game is currently open for pre-order in Japan.
In addition, Mages shared an illustration of Kurisu in a Santa costume to celebrate Christmas and the new compilation.