Aussie Business Traveler says, in part (
link)
However, this version of the familiar Stelia Solstys III design has been tweaked to be slightly wider, at 58cm across compared to 52.5cm on the A330, along with wider footrests and a larger drop-down aisle panel in the seat's shell.
There's also more space at the seat for storing your carry-on kit, plus a larger HD video screen – upsized from 15.4 inches to 18 inches.
Iberia's Airbus A350s will have 31 business class seats in this staggered 1-2-1 layout, along with high-speed satellite Internet connectivity.
Additional schedule and seating configuration from OMAT (
link) includes:
J: 1 - 2 - 1 staggered
W: 2 - 4 - 2
Y: 3 - 3 - 3
First Iberia plans to operate the A350 between Madrid and London Heathrow on July 20 through August 31, 2018, except August 4 through August 16, 2018. As of now the IB3166 frequency shows the A350. I’d guess that this schedule remains highly subject to change.
What I’d feel a bit more comfortable betting on is Iberia’s A350 longhaul debut. Iberia will operate a daily A350 flight to New York as of August 8, 2018, and twice daily A350 flights to New York as of September 1, 2018. Specifically:
IB6251/6250 to New York will feature the A350 as of August 8, 2018
IB6253/6252 to New York will feature the A350 as of September 1, 2018