Apple has introduced ‘Black Friday’ sales event messages on both its US and UK online stores, ramping up anticipation for the special one day discount sale.“The special Apple one-day shopping event. November 27,” the page declares. “Come back to the Apple Online Store this Friday for a special one-day-only shopping event. You’ll find lots of great iPod, iPhone and Mac gift ideas — all with free shipping.”The US online store refers to TGI Friday (thank god it’s Friday), but this time the intro begins, “Come back to the Apple Online Store the day after Thanksgiving for a special one-day-only holiday shopping event.”