sentences:  Sony later stated that the original controller "was very clearly designed as a design concept, and was never intended to be the final controller, despite what everybody said about it".At E3 2006, Sony announced that the boomerang design had been replaced by the Sixaxis; a wireless, motion sensitive controller, similar in overall design to the earlier PlayStation DualShock controllers.The controller was bundled with all new systems from launch, until the introduction of the 80 GB (CECHKxx, CECHLxx & CECHMxx) model, which substituted the Sixaxis with the new DualShock 3 which added to a vibration feature while retaining the design, features and functionality of the Sixaxis.