BT reported this back in May:
– but I’m not aware that there has been any further information released into the public domain.
Speculation that I’ve been party to has been to suggest that any tweaks to Upper Class will be minimal, as per the forthcoming refresh of the same seat as flown by Air New Zealand.
In any event, the delivery timeline mentioned in the BT article would tend to suggest that it will be a while before many aircraft carry the ‘new’ seat, and that at least initially the new aircraft will be deployed on a ‘leisure route’. Neither SFO nor LAX would fall into this category in marketing terms.