Yesterday, coming back from São Paulo, I asked this same question to some RG employees. They said they haven´t heard anything about RG being on any alliances anytime soon. And at this point, from Star´s perspective, TAM is miles ahead of RG, I guess.
Varig´s inflight magazine this month states that RG will be flying in September to Paris and Rome, and till the end of the year to Madrid, London and Mexico City. USA flights should come back next year. I guess we´ll just have to be patient.