These rules only apply on federal facilities or federal property. The current Cal/OSHA rules continue to apply in California. Eventually, Cal/OSHA will have to negotiate with Federal OSHA to have Cal/OSHA's regulations be at least as effective as the Federal regulations.
As most of you have heard, Federal OSHA has finalized rules to protect workers from silica exposure. The new rule takes effect June 23, 2016. The Construction rules become effective June 23, 2017, the General Industry and Maritime rules become effective June 23, 2018, and the Hydraulic Fracturing rules become effective between June 23, 2018, and June 23, 2021.
Cal/OSHA has had a silica rule for construction since 2008, applying to the cutting, grinding, coring, or drilling of concrete or masonry materials. This rule will continue to apply, and the basic Federal OSHA rules for construction are similar. You can see a copy of the current California regulations HERE.