Whas in GRU this weekend and asked some friends from Infraero and UA what will happen.
With TAM comming to *A next year there is a plan to move all the *A companies LH, LX, CO, UA and JJ (TAM) to the same terminal. There is a lot of speculation what will happen. Some suggest TAM will make a super lounge to take care of everything, others say it will be a TAM lounge for TAM flights and a new RCC for all the other *A flights.
Although I don't agree with the second option there will be a renovation next year.