eclipse-simrel · HeikoKlare · Apr 19, 2026
diff --git a/wiki/SimRel/2026-09.md b/wiki/SimRel/2026-09.md
@@ -0,0 +1,23 @@
+This document relates to 2026-09, the Eclipse Foundation's multi-project [Simultaneous Release](../Simultaneous_Release.md) of September 2026.
+
+## Common information
+
+- [Simultaneous Release Requirements](Simultaneous_Release_Requirements.md) (aka must-dos)
+- [Simultaneous Release Plan](Simultaneous_Release_Plan.md) Information that stays the same for each release, like requirements for participation, communication channels, etc.
+
+## Release schedule
+| **Release** | **Date** | **Span** | **Due dates** | **Notes** |
+|---|---|---|---|---|
+| **2026-09 M1** | Friday, July 10, 2026 | 07/03 to 07/10 | <ul><li>Opt-in deadline (new projects only)</ul> | 4 weeks from 2026-06 GA |
+| **2026-09 M2** | Friday, July 31, 2026 | 07/24 to 07/31 | | 3 weeks from M1 |
+| **2026-09 M3** | Friday, August 21, 2026 | 08/14 to 08/21 | | 3 weeks from M2 |
+| **2026-09 RC1** | Friday, August 28, 2026 | 08/21 to 08/28 | <ul><li><b>No new features and APIs after this date!</b><li>New and Noteworthy entries due</ul> | 1 week from M3 |
+| **2026-09 RC2** | Friday, September 4, 2026 | 08/28 to 09/04 | | 1 week from RC1 |
+| **Quiet period** | | 09/04 to 09/08 | | No builds. It is assumed all code is done by end of RC2. |
+| **2026-09 GA** | Wednesday, September 9, 2026 | | | 5 days from RC2 |
+
+[Google Calendar Link](https://calendar.google.com/calendar/embed?src=gchs7nm4nvpm837469ddj9tjlk@group.calendar.google.com&dates=20260626%2F20260910&hl=en&mode=AGENDA)
+
+## Non-wiki pages related to the release
+
+[List of participating projects](https://eclipse.dev/simrel/?file=wiki/SimRel/2026-09_participants.json)
diff --git a/wiki/SimRel/2026-09_dates.json b/wiki/SimRel/2026-09_dates.json
@@ -0,0 +1,8 @@
+{
+	"M1": "2026-07-10",
+	"M2": "2026-07-31",
+	"M3": "2026-08-21",
+	"RC1": "2026-08-28",
+	"RC2": "2026-09-04",
+	"GA": "2026-09-09"
+}
diff --git a/wiki/SimRel/2026-12.md b/wiki/SimRel/2026-12.md
@@ -0,0 +1,23 @@
+This document relates to 2026-12, the Eclipse Foundation's multi-project [Simultaneous Release](../Simultaneous_Release.md) of December 2026.
+
+## Common information
+
+- [Simultaneous Release Requirements](Simultaneous_Release_Requirements.md) (aka must-dos)
+- [Simultaneous Release Plan](Simultaneous_Release_Plan.md) Information that stays the same for each release, like requirements for participation, communication channels, etc.
+
+## Release schedule
+| **Release** | **Date** | **Span** | **Due dates** | **Notes** |
+|---|---|---|---|---|
+| **2026-12 M1** | Friday, October 9, 2026 | 10/02 to 10/09 | <ul><li>Opt-in deadline (new projects only)</ul> | 4 weeks from 2026-09 GA |
+| **2026-12 M2** | Friday, October 30, 2026 | 10/23 to 10/30 | | 3 weeks from M1 |
+| **2026-12 M3** | Friday, November 20, 2026 | 11/13 to 11/20 | | 3 weeks from M2 |
+| **2026-12 RC1** | Friday, November 27, 2026 | 11/20 to 11/27 | <ul><li><b>No new features and APIs after this date!</b><li>New and Noteworthy entries due</ul> | 1 week from M3 |
+| **2026-12 RC2** | Friday, December 4, 2026 | 11/27 to 12/04 | | 1 week from RC1 |
+| **Quiet period** | | 12/04 to 12/08 | | No builds. It is assumed all code is done by end of RC2. |
+| **2026-12 GA** | Wednesday, December 9, 2026 | | | 5 days from RC2 |
+
+[Google Calendar Link](https://calendar.google.com/calendar/embed?src=gchs7nm4nvpm837469ddj9tjlk@group.calendar.google.com&dates=20260925%2F20261210&hl=en&mode=AGENDA)
+
+## Non-wiki pages related to the release
+
+[List of participating projects](https://eclipse.dev/simrel/?file=wiki/SimRel/2026-12_participants.json)
diff --git a/wiki/SimRel/2026-12_dates.json b/wiki/SimRel/2026-12_dates.json
@@ -0,0 +1,8 @@
+{
+	"M1": "2026-10-09",
+	"M2": "2026-10-30",
+	"M3": "2026-11-20",
+	"RC1": "2026-11-27",
+	"RC2": "2026-12-04",
+	"GA": "2026-12-09"
+}