When listing upcoming game releases, Blockbuster UK decided to include the Playstation Vita - adding the date of October 28 for the machine. Another UK retailer, Shopto.net, has listed it as November 4.
Sony have yet to announce any release dates for their next handheld console, but we're hoping that they will get on that during Gamescom. So until Sony says anything official, let's treat this as the typical "retailer adds a random date to an upcoming release to make it easier to pre-order", shall we?