A rumor leaked today from an employee of a major retailer received a product release schedule confirming the launch date for the PS4 as October 21st. According to the source this is routine, as it happened with previous hardware releases such as the 3DS, Wii U, and Vita.
The source details: “These schedules btw, are for internal use only, designed to allow us time to create our in-store merch plans. If the launch date for a product is unknown, it’s simply marked TBA. The only time a date is ever included is when we have received confirmation of said date from the product company.”
Again this is just a rumor, it may very well be wrong, as there has been no confirmation of said launch date from Sony.