Rio build 1407
Rio build 1407 (version 8127.18.1407) was released on November 11, 2026, on Chromium 158.0.8127.18. These are its release notes from GitHub, where the download and the update feed live.
Update for the beta.
- In full screen, the bar that slides down at the top no longer pushes the sidebar and page down more than it covers, with the sidebar docked, floating or in toolbar mode, and the window buttons line up with the sidebar's own buttons.
- Extensions that open their own tabs and windows, such as browser automation assistants, can now find and control those tabs.
- Typing chrome://, about: or rio:// addresses in the command bar opens the page instead of searching.
- Holding Cmd+Q quits Rio on the first hold again.
- Gmail and Calendar previews look like Arc's: your unread mail, and Google Calendar's own page. A pinned Calendar shows your next event and today's date.
- The update card names the build, closing it once no longer hides later updates, and Restart to update works again after a cancelled quit.
- Relaunching from Settings or chrome://flags keeps your tabs and sign-ins.
- About Rio, bug reports and Copy Rio Info show the build number.
Since build 1446, Rio is signed with a Developer ID and notarized by Apple, so a fresh download opens without these steps.
