All this stuff should be on the cal css website here, as well as the config, whatever its gonna end up being this season.
CAL :: Counter-Strike: Source

This seasons map rotation?
pre-season
Week 1: de_rush
Week 2: de_russka
Regular Season
Week 1: Train
Week 2: Dust2
Week 3: CPL_Strike
Week 4: Inferno
Week 5: Season
Week 6: Contra
Week 7: Nuke
Week 8: CPL_Mill

I don't know if there is any other maps people want on here? I would suggest downloading the maps from the cal website as well.