An early prototype of the new Sony PlayStation 4 controller has leaked online.

The controller is very similar to the existing DualShock gamepad, but features a new touch-pad similar to that seen on the back of the handheld PS Vita device.

The controller also features new analog sticks and remodelled shoulder buttons.

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Destructoid revealed the pics and claimed "multiple sources" confirmed it's real - albeit a prototype.

In the picture it is plugged into a development unit, not a new PS4.

Sony is expected to unveil its next-generation console next week. The current generation has sold more than 70 million units since its release.