I just performed my weekly check, hoping, but not expecting to see the swap from the 777 to the A350 and today it happened! New seat map, but same seat assignment (2K) since only 3 window seats were occupied in F on the 777 map. I'm not sure if anyone more knowledgeable than me can find out what happened, but my flight is on October 13th, which was supposed to be one of the alternating days with the 777.