Nealand, however, is persuaded that the listing is absolutely the PlayStation 4 and believes the release date to be officially confirmed by Sony. He states that in previous product release schedules revisions like slim consoles are listed by their official names, where new platforms like the Wii U, 3DS and Vita are only referenced as a Nintendo/Sony console. He also states that release dates, if unconfirmed, are listed as TBA. If a release date is listed, it has been confirmed by the product's company.
Disclaimer: I just work at a very large retailer, managing the electronics sales force and nothing more. I have nothing to do with purchasing, nation wide merchandising or shipping. I am not trying to play this off as I have connections at Sony, or I am some sort of insider. It's that just yesterday we received a product release schedule from our head office and I thought this is OT itt. These schedules btw, are for internal use only, designed to allow us time to create our instore 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."
I've speculated before that Sony may be considering an October release date before in order to launch consequently with a number of big multi-platform titles. We've also seen marketing for early November release dates in Europe, which would imply an even earlier release date in North America. Again, October 21 fits perfectly with these other details. Cancel your 360/PS3 preorders for Call of Duty: Ghosts and Watch Dogs, everyone, it looks like they'll be launching on PlayStation 4 too.
Source: neoseeker.com (via: PS3Crunch.net)