Could it be a careless leak? The posters did just go up today, so its not entirely impossible either. Back in 2008, Square-Enix denied that a PC port would come to pass -- only to then shock the world with an Xbox 360 release. That was a long time ago and this third installment is dramatically different than the first, so that could possibly be announced this week.
Until we hear more from the source, chalk this up as another one of those crazy E3 rumors.
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