The game isn't publicly out yet
There's no release date yet, hopefully within the next year or two
Windows, Linux and OSX releases are planned currently
Steam, at least
Price isn't set yet
Any controller should work but there's no force feedback support planned
No, as it doesn't fit the style of the game
There will be various racing cars, ranging from rallycross to openwheelers
There are damage to the vehicles, visual and physical. Only suspension damage is implemented so far, but aero and engine damage are planned
Most likely no