A curated list of Microsoft Defender and Azure service release notes I track — refreshed weekly, with monthly lookbacks. The last 6 months are listed here — the full history, plus filtering and drill-down, is served via the dedicated ms-release-radar-app.

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• 2026-10

  2026-10-15

• 2026-09

  2026-10-15

• 2026-08

  2026-10-01

• 2026-07

  2026-09-08

• 2026-06

  2026-07-30

• 2026-05

  2026-07-02