diff --git a/.assets/timeline-gantt.png b/.assets/timeline-gantt.png
index 9b9623e..12c96c3 100644
Binary files a/.assets/timeline-gantt.png and b/.assets/timeline-gantt.png differ
diff --git a/CALENDAR.md b/CALENDAR.md
index 5b30cad..574441e 100644
--- a/CALENDAR.md
+++ b/CALENDAR.md
@@ -25,7 +25,7 @@ Full untruncated version index.
 | **stable2603** | 1.22.0 | 2026-02-09 | 2026-03-31 | 2027-03-26 | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2603) |
 |   stable2603-1 | 1.22.1 | 2026-05-04 | 2026-05-04 |  | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2603-1) |
 |   stable2603-2 | 1.22.2 | 2026-05-08 | 2026-05-08 |  | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2603-2) |
-|   stable2603-3 | 1.22.3 | 2026-06-22 | 2026-06-25 |  | Planned |
+|   stable2603-3 | 1.22.3 | 2026-05-28 | 2026-05-28 |  | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2603-3) |
 |   stable2603-4 | 1.22.4 | 2026-07-27 | 2026-07-30 |  | Planned |
 |   stable2603-5 | 1.22.5 | 2026-08-24 | 2026-08-27 |  | Planned |
 |   stable2603-6 | 1.22.6 | 2026-09-28 | 2026-10-01 |  | Planned |
diff --git a/README.md b/README.md
index 69415be..033934d 100644
--- a/README.md
+++ b/README.md
@@ -25,11 +25,11 @@ Planned and historic release dates:
 |   stable2606-2 | 1.23.2 | 2026-09-07 | 2026-09-10 |  | Planned |
 |   [11 more planned](CALENDAR.md) |  |  | | |
 | **stable2603** | 1.22.0 | 2026-02-09 | 2026-03-31 | 2027-03-26 | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2603) |
-|   stable2603-1 | 1.22.1 | 2026-05-04 | 2026-05-04 |  | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2603-1) |
 |   stable2603-2 | 1.22.2 | 2026-05-08 | 2026-05-08 |  | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2603-2) |
-|   stable2603-3 | 1.22.3 | 2026-06-22 | 2026-06-25 |  | Planned |
+|   stable2603-3 | 1.22.3 | 2026-05-28 | 2026-05-28 |  | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2603-3) |
 |   stable2603-4 | 1.22.4 | 2026-07-27 | 2026-07-30 |  | Planned |
-|   [9 more planned](CALENDAR.md) |  |  | | |
+|   stable2603-5 | 1.22.5 | 2026-08-24 | 2026-08-27 |  | Planned |
+|   [1 more past, 8 more planned](CALENDAR.md) |  |  | | |
 | **stable2512** | 1.21.0 | 2025-11-17 | 2025-12-22 | 2027-01-01 | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2512) |
 |   stable2512-4 | 1.21.4 | 2026-04-20 | 2026-04-23 |  | ~~Cancelled~~ |
 |   stable2512-5 | 1.21.5 | 2026-05-21 | 2026-05-21 |  | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2512-5) |
diff --git a/releases-v1.ics b/releases-v1.ics
index 00f97eb..e4c37a5 100644
--- a/releases-v1.ics
+++ b/releases-v1.ics
@@ -1509,17 +1509,17 @@ DESCRIPTION:Release of stable2603-2 (released)\n\nFull Calendar: https://g
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-3 Cutoff
-DTSTART;VALUE=DATE:20260622
-DTEND;VALUE=DATE:20260623
-DESCRIPTION:Cutoff for stable2603-3 (planned)\n\nFull Calendar: https://gi
- thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+DTSTART;VALUE=DATE:20260528
+DTEND;VALUE=DATE:20260529
+DESCRIPTION:Cutoff for stable2603-3 (released)\n\nFull Calendar: https://g
+ ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-3 Release
-DTSTART;VALUE=DATE:20260625
-DTEND;VALUE=DATE:20260626
-DESCRIPTION:Release of stable2603-3 (planned)\n\nFull Calendar: https://gi
- thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+DTSTART;VALUE=DATE:20260528
+DTEND;VALUE=DATE:20260529
+DESCRIPTION:Release of stable2603-3 (released)\n\nFull Calendar: https://g
+ ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-4 Cutoff
diff --git a/releases-v1.json b/releases-v1.json
index 061f912..83c34df 100644
--- a/releases-v1.json
+++ b/releases-v1.json
@@ -1281,13 +1281,12 @@
           },
           {
             "name": "stable2603-3",
-            "cutoff": {
-              "estimated": "2026-06-22"
-            },
+            "cutoff": "2026-05-28",
             "publish": {
-              "estimated": "2026-06-25"
+              "when": "2026-05-28",
+              "tag": "polkadot-stable2603-3"
             },
-            "state": "planned",
+            "state": "released",
             "semver": "1.22.3"
           },
           {