The California Legislature adjourns sine die at close of business Aug. 31, 2026, sending Sen. Ashby’s SB 1050 to Gov. Gavin Newsom with a 30-day signing window that closes on or about Sept. 30. Its practical target is any advertiser running California-facing spots built around an AI-generated spokesperson, voice clone, or digital avatar.

SB 1050 adds a new Article 10 (§17610) to the Business and Professions Code, requiring a “clear and conspicuous” disclosure whenever an ad prominently features a synthetic performer. The bill preserves enforcement through the state’s existing unfair-competition and false-advertising machinery under §§17200 and 17500, meaning violations aren’t a novel cause of action so much as a new hook into a well-worn one. It cleared Assembly Appropriations 12-1 on Aug. 13 and was ordered to third reading Aug. 19, per the Transparency Coalition’s late-August tracker, which also notes that a termed-out Newsom is expected to lean into his legislative legacy this September.

The American Advertising Federation, in its April 14 opposition letter, warned that the statute contains no right-to-cure provision and doesn’t expressly foreclose a private right of action, and urged narrowing the “synthetic performer” definition so routine CGI or voice modulation isn’t swept in. That’s not a small concern for a 5-to-30-person shop that has quietly replaced a paid voice actor with a cloned read.

For context: the session-end sprint coverage, the floor-passage recap, the Assembly vote, and the broader 24-bill sprint.

California disclosure regimes tend to become national defaults. Advertisers who wait for Sept. 30 to react will find that live campaigns are the ones exposed.

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