
A five-repo scan for September 14–20: VS Code 1.138.0 turns agent automations on by default and runs sessions inside Dev Containers, Next.js ships canaries only, and React, Rust, and Tailwind CSS publish nothing at all.
1.138.0 on September 16, which turns agent automations on by default and lets an agent session run inside a project's Dev Container. Next.js spent the week on canary builds with no new stable patch. React, Rust, and Tailwind CSS published no release at all, so those entries cover what moved inside each repository and what is worth watching.v16.3.5 from September 11, and the week's nine releases were canaries, running from v16.4.0-canary.29 on September 14 to v16.4.0-canary.37 on September 19 1. Canary.31 fixed detection of proxy.ts when pageExtensions is composed from several entries 23. Canary.36 tightened how laziness is disabled on next/dynamic 4, and canary.34 records root-parameter reads inside use cache as vary parameters 5. The rest of the train was Turbopack: canary.35 added configuration options for its garbage collector 6, and canary.37 added additional roots and carried symlinks into the NFT metadata that standalone deployments ship 1.AppType is used incorrectly", last active September 14 with 65 comments 9.proxy.ts route detection, next/dynamic, and use cache root parameters.v16.3.5 first if your production deployment is still behind it.1.138.0 on September 16 1011. Automations are enabled by default in this release and can be exported and imported, so one can be shared with a teammate or moved between environments. An agent session can run inside a local folder's Dev Container and use that project's toolchain, which needs Docker installed on the machine. The Codex harness now accepts either a GitHub Copilot or a ChatGPT subscription, can continue a session started in the ChatGPT desktop app, and can call VS Code's built-in, extension, and MCP tools. Agent Merge opens pull requests from a session, and a cleanup preview marks merged sessions as done and can delete them after a grace period. Two settings changed: chat.agentSessions.backgroundImageLayout is replaced by separate dark and light settings, and Chat: Clear Background is gone, folded into Chat: Set Background... 11.1.138.0 is the week's only stable release, and it changes a default: automations start running without anyone switching them on.chat.automations.enabled first if scheduled agent work is something you want to opt into rather than inherit, and update any configuration that referenced the deprecated background-image setting.facebook/react whitelist entry, published no release in the window. The newest stable is v19.3.0 from September 9 16. Nine commits landed on main between September 14 and 18, in the compiler, the Flight layer, and the DOM layer. The compiler now treats a zero-argument new Date() as impure during render and bails on use of the arguments object 1718. Flight gained server references for arbitrary object types 19. In the DOM layer, toggle and beforetoggle events stopped emulating bubbling, and compareDocumentPosition was fixed for a Fragment's root container 2021. None of this has reached a published release yet.v19.3.0.v19.3.0 remains the current stable and nothing newer exists. If you have not shipped it yet, that upgrade still stands; if you have, there is nothing to install this week.1.98.1 from September 3 25. Merged work during the week stayed at the compiler and standard-library level. Performance work on the Polonius borrow checker landed on September 20 26, RawVec dropped its uses of Unique the same day 27, and a cluster of rollups touching 128-bit floats and varargs across PowerPC, AIX, and the test harness went in on September 19 and 20 2829.Allocator" with 190 comments, active September 19 31, and PR #132553, "Make Rc<T>::deref and Arc<T>::deref zero-cost" with 166 comments, active September 20 32.1.98.1. If your toolchain is still below it, take that upgrade first, because it carries the vtable miscompilation fix.v4.3.3 from July 16 33. The most recent activity of any kind is PR #20276, "feat(oxide): add OpenHarmony (aarch64-unknown-linux-ohos) prebuilt binary support", last updated September 10, just before the window opened 34.v4.3.3, the newest stable since July 16.| Repository | Latest relevant release | Window status and hot watch | Upgrade call |
|---|---|---|---|
| vercel/next.js | v16.3.5, Sep 11; v16.4.0-canary.37, Sep 19 1 | Canary-only week: proxy.ts detection, next/dynamic laziness, use cache root parameters, Turbopack GC options and NFT roots; #49279 has 143 comments and #64921 has 108 78 | Hold |
| microsoft/vscode | 1.138.0, Sep 16 10 | Automations on by default, agent sessions in local Dev Containers, Codex with either subscription, session cleanup preview; #519 has 602 comments and #3130 has 453 1213 | Conditional |
| react/react | v19.3.0, Sep 9 16 | No release; compiler purity and DOM event commits on main; #13991 has 515 comments and #11347 has 286 2223 | Hold |
| rust-lang/rust | 1.98.1, Sep 3 25 | No release; Polonius performance and RawVec merges; #112049 has 2,426 comments and #156882 has 190 3031 | Hold |
| tailwindlabs/tailwindcss | v4.3.3, Jul 16 33 | No release and no commits; latest repository activity is PR #20276 on Sep 10; #17958 has 38 comments 3435 | Hold |
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