That list is outdated. There's no news on Renault. Anyway, five manufacturers is fine: CHevrolet, Ford, Honda, Toyota and Mitsubishi.
The best Brazilian motorsport news webiste I've found this summer is
www.gpnews.com.br. They only have two 2013 news on drivers: Allam Khodair to drive a J.Start Chevrolet Cruze, and young Kreis Jr driving a Carlos Alves Chevrolet Cruze.