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Update supported OS matrix for .NET 10 and 11 - #10714

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update-supported-os-2026-11-11
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update-supported-os-2026-11-11

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Audit via release-notes verify supported-os against endoflife.date.

.NET 10.0

  • Moved to unsupported: tvOS 26, Alpine 3.21, Windows 11 24H2 (W), Windows 11 23H2 (E), Windows 10 1607 LTSB, Windows Server / Server Core 2012 and 2012 R2 (ESU ended 2026-10-13; ESU note removed)
  • Added: Fedora 45, Ubuntu 26.10, Windows 11 26H2 (E/W)

.NET 11.0

  • Added: Ubuntu 26.10, Windows 11 26H2 (E/W)
  • Removed Windows 10 1607 LTSB (EOL 2026-10-13, before .NET 11 GA)

Remaining verify items are intentional (old iOS/iPadOS cycles, Debian 12 for 10.0, 11.0 Rule 2 exclusions) or CAUTION-only (Server 2016, Windows 10 21H2 LTSC, Fedora 43).

Follow-up: distros/ package data lacks Fedora 45 / Ubuntu 26.10 entries.

- 10.0: move tvOS 26, Alpine 3.21, Windows 11 24H2 (W), 11 23H2 (E),
  10 1607 LTSB, and Windows Server 2012/2012 R2 (ESU ended) to unsupported;
  add Fedora 45, Ubuntu 26.10, Windows 11 26H2
- 11.0: add Ubuntu 26.10 and Windows 11 26H2; remove Windows 10 1607 LTSB
  (EOL before GA)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 557ee325-73f3-4b80-875b-1ae12a654d1f

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