Linear launches Diffs with AI-guided PR reviews and realtime updates

• Linear's launch post introduced Diffs, a pull request review workflow inside Linear with realtime updates, focused notifications, threaded comments, coding-agent iteration, and a beta AI review assistant.
• In Linear's accompanying essay, the company framed Diffs around speed, which matches the product launch positioning code review as something teams should do without leaving their issue tracker.
• Early usage feedback was positive, with nummanali's hands-on post calling Diffs "a banger" after a few weeks of use.
• One limitation surfaced immediately: when stephenhaney's reply asked for a way to see all PRs, Linear's response said that view does not exist yet.

You can watch Linear's launch video, read Linear's design essay, and spot an early product gap in the exchange between stephenhaney's question and Linear's reply. There is also a separate thread from koltregaskes asking for Linear's inbox to be readable through a connector, which hints at the broader agent workflow people want around the product.

Linear shipped Diffs as an in-product review surface for pull requests. The launch materials center on keeping review close to the rest of the team's work instead of bouncing back out to a git host.

According to Linear's feature list, the first release includes:

• Realtime updates
• Guided reviews with AI, in beta
• Focused notifications
• The ability to iterate with coding agents
• Threaded comments

Linear's essay on review speed adds the product rationale, but the launch post is the more concrete artifact: Diffs is a new review layer inside Linear, not just a UI tweak around existing PR links.

The most notable new piece is the AI-assisted review flow. Linear's launch post names "guided reviews with AI" directly, and the launch video positions that guidance next to more conventional review primitives like comments and notifications.

Linear did not spell out model details, review heuristics, or which code hosts are supported in the tweet launch itself. What it did make explicit in Linear's public announcement is the intended workflow: humans review, AI helps steer, and coding agents stay in the loop for iteration.

The cleanest day-one caveat came from the replies. When stephenhaney's question asked whether Diffs could show all PRs instead of only ones the user was already associated with, the answer from Linear's reply was no.

That matters because it marks a boundary on how complete the review inbox is today. Diffs can centralize review activity inside Linear, but PR discovery still appears narrower than a full repo-wide queue.

The launch copy's line about iterating with coding agents landed because some users are already trying to push Linear further into agent coordination. In a separate post, koltregaskes said they wanted Linear's inbox to be readable through a connector so agents and chatbots could use it, and described trying to turn a project into a message layer instead.

That is not a Diffs announcement feature, but it is a useful signal about where power users want this to go: not just review inside Linear, but agent-to-agent workflow inside the same system.