Zed launched Delta on August 12, a standalone multiplayer app for coding with AI agents and reviewing their output. It runs on DeltaDB, which records every edit between commits with a stable identity so review comments stay anchored as code changes, and it keeps the agent conversation stored alongside the worktree.

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Transcript

Zed just shipped a whole new app, and it isn't the editor. It's called Delta, and the first beta invites went out today. Here's the problem it goes after. When an agent writes your code, the conversation that produced it is the most useful thing you have, and every review tool throws it away. You open a pull request and you're reading a giant diff with no idea why any of it looks like that. Delta keeps the conversation and the code in the same place. And underneath it, DeltaDB records every single edit between your commits, each one with its own identity. So a review comment anchors to the change itself, not to a line number that moves. Force push, and your comments are still pointing at the right thing. Everyone in a thread gets a live copy of the worktree. Your git repo keeps working exactly as it did.