Summary
On August 12, 2026, Zed introduced Delta, a multiplayer environment for collaborative coding between developers and AI agents. Its DeltaDB sync engine replicates both the conversation and the worktree in real time for every participant, treats agents as active members of the development thread, and anchors code-review comments to specific lines so feedback evolves with the worktree instead of going stale. Delta integrates with existing Git repositories while keeping a persistent history of edits and discussions between commits.
What changed
Zed released Delta with DeltaDB, real-time replication of the conversation and worktree across human and agent participants, plus line-anchored, worktree-aware code review.
Why it matters
Most agent-coding tools still assume one human driving one agent. Delta reframes the editor as a shared, versioned space where multiple people and agents edit and review the same worktree live, pushing collaboration and review, not just generation, as the next battleground for AI-native editors.
Evidence excerpt
DeltaDB replicates both the conversation and the worktree in real-time for all participants; code-review comments are anchored to specific lines of code and evolve with the worktree.