yes 311 seats, which is the seating capacity for their B789s :-
https://www.planespotters.net/airline/Qatar-Airways
we won't see twice daily from them over winter, they hold the twice daily slots so they can fly a few early morning flights, and a few lunch time flights, the same as the upcoming summer services
don't know where people are getting Emirates double daily A380 from this winter?
their request is for a total of 321,244 seats, so divided that by the 616 flights, gives a seat average of 521.5 per flight
A388 2 class has 615 seats (EK39/40), B77W 2 class 428 seats (EK37/38), 615 + 428 = 1,043 seats a day
divide 1,043 seat by the 2 flights, gives 521.5 seats per flight, the slots they have requested!
2 A388s would be 615 x2 = 1,230 a day so 1,230 x 616 flights = 757,680 seats for the winter period.