Sony has plans of discontinuing the SIXAXIS PS3 controller only to replace it with the new DualShock 3
Not since the PS2 days has the controller felt a slight rumble in vibrations. The DualShock 3 will be available to US customers on April 15th, in which its speculated to coincide with the release of Gran Turismo 5.
The DualShock 3 controller will be officially a part of new consoles this June, with the introduction of the Metal Gear Solid 4.