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Add media server 3.9.0 release notes - #954

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bcostdolby wants to merge 4 commits into
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devin/1793761940-media-server-3.9.0-notes
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bcostdolby wants to merge 4 commits into
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devin/1793761940-media-server-3.9.0-notes

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@bcostdolby

@bcostdolby bcostdolby commented Nov 4, 2026 •

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Summary

Adds the Media Server 3.9.0 entry, dated 2026-11-04 (the day the production rollout started), to the Platform and Media Server changelog (millicast/changelog/changelog-dolbyio-platform-media-server.md). This release covers reliability fixes for viewer nodes, a change to the WebSocket signaling response for requests without an Upgrade header (400 to 426 Upgrade Required), performance improvements for media servers with many viewers, and OS, Node.js and dependency security updates.

main has been merged in. The 3.9.0 entry now sits above 3.8.0 (#940) and 3.7.0 (#903).

Link to Devin session: https://dolby.devinenterprise.com/sessions/2a987ce74b514713bc78cdca6c1ef049
Open in Devin Desktop: https://dolby.devinenterprise.com/desktop/session/2a987ce74b514713bc78cdca6c1ef049?variant=devin
Requested by: @bcostdolby


🟢 Devin Review found nothing to fix · View findings

Devin Review

Co-Authored-By: Brendon Costa <brendon.costa@dolby.com>
@devin-ai-integration

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I'll fix CI failures and address comments from users with write access. I'll skip comments containing "(aside)".

  • Disable automatic comment, CI, and merge conflict monitoring

devin-ai-integration[bot]

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@theoplayer-bot

theoplayer-bot Bot commented Nov 4, 2026 •

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Documentation preview
🚀 View preview at
https://docs-preview.optiview.dolby.com/pr-954/

Deployed from commit adf6d9d at 2026-11-09 21:33 UTC.

devin-ai-integration Bot and others added 3 commits November 5, 2026 03:59
Co-Authored-By: Brendon Costa <brendon.costa@dolby.com>
…a-server-3.9.0-notes

Co-Authored-By: Brendon Costa <brendon.costa@dolby.com>

# Conflicts:
#	millicast/changelog/changelog-dolbyio-platform-media-server.md
…a-server-3.9.0-notes

Co-Authored-By: Brendon Costa <brendon.costa@dolby.com>

# Conflicts:
#	millicast/changelog/changelog-dolbyio-platform-media-server.md

@ZitaLiao ZitaLiao left a comment

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lgtm

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2 participants