After four years of development, Timespinner will "go gold" and finally be available on September 25th for PlayStation 4, Vita, Windows, Mac, and Linux! The 3DS port will follow some months after this initial launch. A Steam purchase includes cross-buy (Linux, Mac, Windows). A PSN purchase includes cross-buy (PS4, PSV).

Links
Steam page for Timespinner
PlayStation Web page for Timespinner