just my two cents.....
Reuters is carrying the story, since Oct 31, that Cathay would be buying up to 15 744's, and quotes a Cathay spokesperson in the article discussing the plans for the planes. The seller is indeed BA, with Boeing the third party in the deal, who will be selling 20 773's to BA as part of the deal. In fact, it is on just about every website and news site that deals with aviation that I go to - the ones I trust as well as those that are rumour mills - and has been for two weeks.
Cheers,
pintail