Yes my flights (for 22 Oct) were changed too. I was in F so called BA and asked to swap to Dubai on a 777. They changed outbound flights accordingly and offered a private transfer to AUH hotel.
Inbound (29 Oct) is for now unchanged as that is on a 777 and looks to be operated by BA still.
Now to change the hire car booking...This was done via Iberia Avis using the avios from their 90,000 avios promo. What's the betting that goes as smoothly??!