diff --git a/releases/20261028.md b/releases/20261028.md
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+++ b/releases/20261028.md
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+---
+title: 20261028
+date: Wednesday, October 28th 2026
+sidebar: true
+---
+
+# Release 20261028 - October 28th 2026
+
+## API
+
+- [Full changelog](https://github.com/geoadmin/mf-chsdi3/compare/2026-07-01-rc1...2026-08-26-rc1)
+
+## Geodata
+
+| Status | Layer                                                                                                                                                                                      |
+| ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| New    | [Magnetic field emissions of electrical installations](https://map.geo.admin.ch/?layers=ch.bafu.magnetfeldbelastung-elektrische_anlagen) (ch.bafu.magnetfeldbelastung-elektrische_anlagen) |
+| Update | [Ozone mp98 O3](https://map.geo.admin.ch/?layers=ch.bafu.luftreinhaltung-ozon) (ch.bafu.luftreinhaltung-ozon)                                                                              |
+| Update | [Particulate matter PM2.5](https://map.geo.admin.ch/?layers=ch.bafu.luftreinhaltung-feinstaub_pm2_5) (ch.bafu.luftreinhaltung-feinstaub_pm2_5)                                             |
+| Update | [Particulate matter PM10](https://map.geo.admin.ch/?layers=ch.bafu.luftreinhaltung-feinstaub_pm10) (ch.bafu.luftreinhaltung-feinstaub_pm10)                                                |
+| Update | [Sulfur dioxide SO2](https://map.geo.admin.ch/?layers=ch.bafu.luftreinhaltung-schwefeldioxid) (ch.bafu.luftreinhaltung-schwefeldioxid)                                                     |
+| Update | [Nitrogen dioxide NO2](https://map.geo.admin.ch/?layers=ch.bafu.luftreinhaltung-stickstoffdioxid) (ch.bafu.luftreinhaltung-stickstoffdioxid)                                               |
diff --git a/releases/releases-sidebar.json b/releases/releases-sidebar.json
index 93101aa..a07e52c 100644
--- a/releases/releases-sidebar.json
+++ b/releases/releases-sidebar.json
@@ -1,4 +1,8 @@
 [
+  {
+    "text": "Release 20261028",
+    "link": "/releases/20261028"
+  },
   {
     "text": "Release 20260826",
     "link": "/releases/20260826"