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I reached out to Mark Christian, Director of Government Relations at AIA California. Here's the information he provided. Hope this helps.
Some info on SB 330 (which does go into effect on 1/1/2020.
Author press release
The actual bill, with links to analyses (under Bill Analysis tab, look at 9/5 Senate Floor Analysis or 9/4 Assembly Floor Analysis).
And here are links to signed ADU bills.
§ AB 68: Allows two ADUs on a single lot, as well as multiple ADUs on multifamily lots. Also limits certain design requirements that cities can impose on ADUs, and requires ADU approvals be completed in 60 days.
§ SB 13: Restricts the amount of impact fees that can be charged, incorporating recommendations from our recently released California Impact Fee report
§ AB 881: Eliminates owner-occupancy requirements for five years.
§ AB 670: Bans Homeowners Associations from banning ADUs.
Jeffrey Gill, FAIA
1981 Orchard Drive
Newport Beach, CA 92660