Booking some personal flights today and noticed that from 05JAN-01MAR 2-3 daily flights are now operating with 764 equipment instead of 76W. As of now, all flights revert to 76W on 02MAR.

The Premium Select cabin is offered as Comfort+, with "E" (starboard aisle) seats blocked in each row. The usual Comfort+ section appears to be available for all elites to reserve at booking.