News of this was released this afternoon while I was in the Annual National Firearms Law Seminar and didn't have my computer handy. A coalition of groups including the Second Amendment Foundation, the CalGuns Foundation, the Firearms Policy Coalition, and the Firearms Policy Foundation plus seven individuals filed suit challenging the state's ban on standard capacity magazines. The suit was filed in the US District Court for the Eastern District of California.
From the news release sent out by the CalGuns Foundation:
This plus the NRA lawsuit is a good start.