I am booked on one of the intra-Europe A350XWB flights, AMS-HEL, and I see two couples' seats in the rear section of the plane, row "56" (FKA 46). This is not the last row BTW. Seats are marked A window/C aisle. This single changed row configuration is not on any seat map and I will be interested to see what it actually ends up looking like. I can't imagine they randomly put a single row of premium economy in the back. Any thoughts?