According to routesonline, Ethiopian Airlines will deploy the Airbus A350-900XWB on its daily Addis Ababa – Dubai service between 1 Aug 2016 and 31 Aug 2016.
Planned A350-900XWB schedule as follow.
ET600 ADD2200 – 0300+1DXB 350 D
ET601 DXB0440 – 0755ADD 350 D
Configuration of the airline's A350 is C30Y313. The airline earlier this year briefly filed A350 schedule for Addis Ababa - Abuja flight from July 2016, however that filing was removed shortly.