Coloring Game: Girls 3 is scheduled to be released in the summer.
https://store.steampowered.com/app/3525390/Coloring_Game_Girls_3/
On April 25, two DLCs (CG5) will be released.
https://store.steampowered.com/app/3357200/Coloring_Game_54/
https://store.steampowered.com/app/3357210/Coloring_Game_55/