More details on the transition to Manifest V3 | Blog | Chrome for Developers

Last year, we announced a timeline for the phasing out of Manifest V2 extensions as we shift our focus to Manifest V3. This change will give Chrome users increased safety and peace of mind while browsing and installing extensions by providing more transparency and control over permissions, adding stricter protocols for accessing resources outside the extension’s context, and ensuring that extensio

[Pasta-K]

“Starting in January in Chrome 112, Chrome may run experiments to turn off support for Manifest V2 extensions in Canary, Dev, and Beta channels.”

[munieru_jp]

Chromeにおける拡張機能のManifest V2サポート、2023年6月まで延期されたと見ていいのかな（「Chrome may run experiments to turn off support for Manifest V2 extensions」というのがなんとも曖昧な表現だが）