Okay, so it's safe to say this is the first official broken promise for GT6 (going by what Kaz said about the track addition in mid February). No February update/DLC. The only way I see this happening is PD announcing something today and releasing it tomorrow, which probably won't happen.
"Although the Sony and Polyphony Digital representatives on-hand at the event kept most of the details about the location secret, they did confirm we’ll be learning more about it in an update coming to the game this February."