More info on the PC version.
The game supports KB/M for in-game traversal. Menu will be KB-driven.
The game also natively supports Steam Controller out of box in addition to Xbox (XInput) and DualShock4 (DInput) controller for those who care.
More importantly, the celestial brush movement can be controlled by mouse, trackball/touchpad, and of course, Steam Controller trackpad! ;-)
Frame rate will be locked to 30fps. We actually experimented with 60fps and uncapped frame mode, but unfortunately it breaks the game logic, collision detection, and anim speed in certain areas of the game. The reality is that it'd take a Hurculean effort, time and cost to manually fix and QA by trial and error since we're working with legacy code from PS3 that was originally intended with 30fps in mind.
Fortunately, the game is not a fast twitch game so a locked 30fps actually works well for the game.