PS4 for E3 2012, More at TGS - PSM3

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siphillis said:
as long as sony ships about the same amount of consoles in a year, without a big decline and as long as microsoft wont reveal the new xbox, there is no reason at all for sony to reveal the new ps4. Microsoft just hit a peak year so why would they reveal their new console.

Because, as has already been said, letting your opposition get a large head start is a very, very bad idea.