Valve have confirmed on Twitter that the Steam controller will cost $49.99 in the US, roughly the same as a PS4 or Xbox One controller, and will arrive sometime in November.
— Steam (@steam_games) March 27, 2015
There is no word on whether this controller will work outside of the SteamOS/Steam Machine, there may be potential for Valve to incorporate compatability with Windows or Mac in the future to try and take the crown from the popular Xbox 360 controller.
The controller is set to boast a number of features including dual trackpads, HD haptic feedback, dual-stage triggers, back grip buttons, and fully customisable control schemes.
The Steam Controller‘s dual trackpads enable the high-fidelity input required for precise PC gaming in the living room. Allowing for 1:1 absolute position input via virtual controls like a trackball, adaptive centering joystick, or steering wheel, these surfaces can be programmed to serve up whatever a game needs.
Haptic force actuators on both sides of the controller deliver precise, high fidelity vibrations measured in microseconds. Feel the spin of a virtual trackball, the click of a scroll wheel, or the shot of a rifle. Every input, from the triggers to the trackpads, can offer haptic feedback to your fingertips, delivering vital, high-bandwidth, tactile feedback about speed, boundaries, thresholds, textures, or actions.
With a satisfying digital click at the end of the trigger pull, dual-stage triggers can be used as analog, digital, or both types of input at the same time. Put your iron-sights on the sweep-in, and then fire with the reliable feel of a tactile switch, all on the same trigger.
Each of the Steam Controller’s input zones and buttons has been positioned based on frequency of use, required precision, and ergonomic comfort.