CArnage Matey,
Yep, 'tis but a rumour. The spin on the grapevine that I heard was the replacement of the 747 with the 777-300 ER. Upto 50 tonnes less fuel burn on a Sao Paulo round trip with the same premium load but a slightly reduced economy.
Who knows what will go on next week with BA let alone along the 'big picture' roadmap.
Cheers
W2P