Future 1/4 Scale pieces should be billed as Premium Format Figure (unless there is a decision made in which a piece couldn't be called a Premium Format Figure).
Anything not 1/4 would be named accordingly (Comiquette, Maquette, Statue, Legendary Scale, Sixth Scale, etc...depending on the license, character, scale, etc.). Will future comiquettes be in 1/5 scale only? That, unfortunately I cannot answer as scales can change sometimes. Comiquettes tended to almost be 1/5 scale but I can't guarantee that would continue to be the trend in the future.
-SideshowAlex