A.net rumor that UA is going to operate JFK-GRU in place of Varig in the near-term. There is the comment and a link to an article in Portuguese (which I cannot read) in post 23 of the thread. I know it is A.net, so I do not put too much stock in it, but hey, it's a rumor... @:-)

http://www.airliners.net/discussions....main/2970690/