Sony has admitted that their upcoming successor to the could be delayed beyond its proposed 2011 arrival.

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Stalls in component production due to the tsunami and earthquake in may prevent from launching the worldwide by the end of the year.

Sony Computer Entertainment America president Jack Tretton told Bloomberg that the troubles in Japan "may be the straw that says 'maybe we get to just one market by the end of the year'".

Initial rumours had suggested that developers were preparing for a launch in at the very least in the first half of November.

By Ewan Aiton