I'm looking at a flight in September 2021 that appears to be on a BA A350-900. From the searches I've done (results of which only refer only to the A350-1000) suggest this plane has not yet entered service. Maybe it will not enter service before my proposed September flight, but if it does, I will certainly look forward to it.

I'm contemplating a flight in business class on this plane. I assume that there are no bad seats up front (based on what I read about the BA A350-1000), just a few minor points that may make a few seats marginally a bit better than others. I figure any seat in business class on this plane would be a good one. Reasonable?

Does anyone know when BA plans the first flights of their A350-900?