Here you have the rosters:
http://www.melhordovolei.com.br/index.php/mercado/masculina
This page may not be comfortable, but if you want to find something else checking teams' website is the only way.
Date & schedule of playing is still uknown.
EDIT: League will start in November.
There are also two competitions in progress - State Championships from Minas and State Championships from Sao Paulo(Campeonato Mineiro and Campeonato Paulista). You can check results, for example, here: http://www.espacodovolei.com/
Thanks to yates for help.