As of now, no. A family member is on that flight next week. EF won't even pull up the seat map (it does for Y, which still shows a 789 seat map). Can't choose or change seats online. When I called, the phone agent said he was seeing a five-row 2x2 configuration, which obviously doesn't match any aircraft capable of flying IST-KUL. After checking a bit more he said he didn't have access to the seat map either and told me to ask for a new seat at the airport.