On Wednesday, the presidents of Brazil and Russia agreed on a 2009 conference that will be held in Russia and will involve Russia, Brazil, India, and China. It is unknown whether or not China and India have agreed to participate. From the Associated Press:
[Brazilian] President Luiz Inacio Lula da Silva said Brazil, Russia, India and China “represent a powerful force,” signing a statement on the summit with his visiting Russian counterpart, Dmitry Medvedev.
China has become more involved in Latin America, as seen in this article from CDT, and has recently been improving ties with Russia, as seen in this article from CDT.