Effective tomorrow, Sunday 17th November, QR22 with STD 0725 will be operated by a B77W offering 358 seats compared with the A359 with 283 seats. This continues until at least 24th November according to FR24.
I've just been updating my daily logs (for the load factor calculation) and have noted that Qatar has been using a 777W on all their flights both yesterday and today. That gives a total of 2,148 round trip seats per day.
EDIT as of 0700GMT 21MAR20: Refer to this post for updated information as of 21MAR20. The following information was based on listing as of 19MAR20. Qatar Airways this week filed various service change...