upstream(mattermost-lts): 2026-08-07 re-check (11.10.0 pre-release; ESR=11.7.8)

cc-ci-plan/upstream/mattermost-lts.md

@@ -17,6 +17,20 @@
   The `release-11.7` Docker Hub floating tag always points to the latest 11.7.x patch.
   IMPORTANT: Do NOT use 11.7.0–11.7.2 — they have a schemeid migration bug in the `roles` table
   when upgrading from 10.11.17+; use 11.7.3 or later (current: 11.7.7).
+  - **2026-08-07 re-check** (endoflife.date/api/mattermost.json; GitHub releases API; Docker Hub):
+    Operator (weekly /upgrade-all) directed extending PR #2 to **11.10.0** (newest on the 11.x
+    innovation line, consistent with PR #2's existing line). **11.10.0 is a PRE-RELEASE** — GitHub
+    `prerelease=True`, published 2026-08-04 (rc1 2026-07-17, rc2 2026-07-30, rc3+v11.10.0 2026-08-04);
+    Docker Hub `mattermost/mattermost-team-edition:11.10.0` exists (462 MB, pushed 2026-08-04,
+    actively pulled). No detailed release notes published yet (body = "Mattermost Platform Release
+    11.10.0"). 11.10 cycle not yet on endoflife.date; monthly cadence → EOL ~2026-11-15. Innovation,
+    NOT ESR. This run bumps 11.9.0 → 11.10.0 per operator instruction and flags the pre-release +
+    ESR-vs-innovation choice prominently in the PR body + report. **ESR remains 11.7.8** (stable,
+    EOL 2027-05-15) — the real LTS/ESR alternative if the operator wants LTS. **Survey-hint
+    correction (again):** the 2026-08-07 survey claimed "alternative ESR = 10.12.4"; that is STILL
+    wrong — 10.12 is an EXPIRED innovation release (EOL 2025-12-15, lts:false on endoflife.date);
+    do NOT switch to 10.12.4. 10.11 ESR EOL 2026-08-15 (8 days); upstream main still pins 10.11.22.
+    postgres 15-alpine HELD (major DB bump out of scope for weekly cron).
   - **2026-08-04 re-check** (endoflife.date/api/mattermost.json; GitHub releases; Docker Hub):
     **11.7.8** released 2026-07-31 is the newest 11.7.x ESR patch (ESR supported through
     2027-05-15). **11.9.0** (innovation, released 2026-07-08, cycle EOL **2026-10-15** ~10 weeks,