Boris Cherny said Projects have changed how he codes: he stopped managing sessions, sends thoughts as they come, and Claude splits them into threads while the project remembers how he works. The ClaudeDevs account stated that Projects are rolling out in Claude Code on desktop and web, in beta for select users, running threads as parallel cloud sessions that pass context between them.
The practical shift is that splitting work into sessions becomes Claude's job instead of the developer's. This is a single user's account from someone inside Anthropic, so it does not establish how the workflow performs for other developers or codebases.