
Meta Ads Updates: September 2026 Changelog for Media Buyers
Every Meta ads change from August 8 to August 31, 2026: placement exclusions leaving ad sets with bids floored at minus 90 percent, the MCP permissions panel that shipped with everything on, Meta AI reading your ad account, the teen two-hour clock, one confirmed outage against eight claimed, August CPMs, and what to do about each.












