diff --git a/.assets/timeline-gantt.png b/.assets/timeline-gantt.png
index 12c96c3..bf9f322 100644
Binary files a/.assets/timeline-gantt.png and b/.assets/timeline-gantt.png differ
diff --git a/CALENDAR.md b/CALENDAR.md
index 574441e..ad32d5a 100644
--- a/CALENDAR.md
+++ b/CALENDAR.md
@@ -26,16 +26,15 @@ Full untruncated version index.
 |   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 | 2026-05-28 | 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 |
-|   stable2603-7 | 1.22.7 | 2026-10-26 | 2026-10-29 |  | Planned |
-|   stable2603-8 | 1.22.8 | 2026-11-23 | 2026-11-26 |  | Planned |
-|   stable2603-9 | 1.22.9 | 2026-12-28 | 2026-12-31 |  | Planned |
-|   stable2603-10 | 1.22.10 | 2027-01-25 | 2027-01-28 |  | Planned |
-|   stable2603-11 | 1.22.11 | 2027-02-22 | 2027-02-25 |  | Planned |
-|   stable2603-12 | 1.22.12 | 2027-03-22 | 2027-03-25 |  | Planned |
-|   stable2603-13 | 1.22.13 | 2027-04-26 | 2027-04-29 |  | Planned |
+|   stable2603-4 | 1.22.4 | 2026-06-22 | 2026-06-25 |  | Planned |
+|   stable2603-5 | 1.22.5 | 2026-07-27 | 2026-07-30 |  | Planned |
+|   stable2603-6 | 1.22.6 | 2026-08-24 | 2026-08-27 |  | Planned |
+|   stable2603-7 | 1.22.7 | 2026-09-28 | 2026-10-01 |  | Planned |
+|   stable2603-8 | 1.22.8 | 2026-10-26 | 2026-10-29 |  | Planned |
+|   stable2603-9 | 1.22.9 | 2026-11-23 | 2026-11-26 |  | Planned |
+|   stable2603-10 | 1.22.10 | 2026-12-28 | 2026-12-31 |  | Planned |
+|   stable2603-11 | 1.22.11 | 2027-01-25 | 2027-01-28 |  | Planned |
+|   stable2603-12 | 1.22.12 | 2027-02-22 | 2027-02-25 |  | Planned |
 | **stable2512** | 1.21.0 | 2025-11-17 | 2025-12-22 | 2027-01-01 | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2512) |
 |   stable2512-1 | 1.21.1 | 2026-01-26 | 2026-01-26 |  | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2512-1) |
 |   stable2512-2 | 1.21.2 | 2026-02-23 | 2026-02-23 |  | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2512-2) |
diff --git a/README.md b/README.md
index 033934d..11be1ef 100644
--- a/README.md
+++ b/README.md
@@ -27,9 +27,9 @@ Planned and historic release dates:
 | **stable2603** | 1.22.0 | 2026-02-09 | 2026-03-31 | 2027-03-26 | [Released](https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2603) |
 |   stable2603-2 | 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 | 2026-05-28 | 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 |
-|   [1 more past, 8 more planned](CALENDAR.md) |  |  | | |
+|   stable2603-4 | 1.22.4 | 2026-06-22 | 2026-06-25 |  | Planned |
+|   stable2603-5 | 1.22.5 | 2026-07-27 | 2026-07-30 |  | Planned |
+|   [1 more past, 7 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 e4c37a5..3005cda 100644
--- a/releases-v1.ics
+++ b/releases-v1.ics
@@ -1523,145 +1523,131 @@ DESCRIPTION:Release of stable2603-3 (released)\n\nFull Calendar: https://g
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-4 Cutoff
-DTSTART;VALUE=DATE:20260727
-DTEND;VALUE=DATE:20260728
+DTSTART;VALUE=DATE:20260622
+DTEND;VALUE=DATE:20260623
 DESCRIPTION:Cutoff for stable2603-4 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-4 Release
-DTSTART;VALUE=DATE:20260730
-DTEND;VALUE=DATE:20260731
+DTSTART;VALUE=DATE:20260625
+DTEND;VALUE=DATE:20260626
 DESCRIPTION:Release of stable2603-4 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-5 Cutoff
-DTSTART;VALUE=DATE:20260824
-DTEND;VALUE=DATE:20260825
+DTSTART;VALUE=DATE:20260727
+DTEND;VALUE=DATE:20260728
 DESCRIPTION:Cutoff for stable2603-5 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-5 Release
-DTSTART;VALUE=DATE:20260827
-DTEND;VALUE=DATE:20260828
+DTSTART;VALUE=DATE:20260730
+DTEND;VALUE=DATE:20260731
 DESCRIPTION:Release of stable2603-5 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-6 Cutoff
-DTSTART;VALUE=DATE:20260928
-DTEND;VALUE=DATE:20260929
+DTSTART;VALUE=DATE:20260824
+DTEND;VALUE=DATE:20260825
 DESCRIPTION:Cutoff for stable2603-6 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-6 Release
-DTSTART;VALUE=DATE:20261001
-DTEND;VALUE=DATE:20261002
+DTSTART;VALUE=DATE:20260827
+DTEND;VALUE=DATE:20260828
 DESCRIPTION:Release of stable2603-6 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-7 Cutoff
-DTSTART;VALUE=DATE:20261026
-DTEND;VALUE=DATE:20261027
+DTSTART;VALUE=DATE:20260928
+DTEND;VALUE=DATE:20260929
 DESCRIPTION:Cutoff for stable2603-7 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-7 Release
-DTSTART;VALUE=DATE:20261029
-DTEND;VALUE=DATE:20261030
+DTSTART;VALUE=DATE:20261001
+DTEND;VALUE=DATE:20261002
 DESCRIPTION:Release of stable2603-7 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-8 Cutoff
-DTSTART;VALUE=DATE:20261123
-DTEND;VALUE=DATE:20261124
+DTSTART;VALUE=DATE:20261026
+DTEND;VALUE=DATE:20261027
 DESCRIPTION:Cutoff for stable2603-8 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-8 Release
-DTSTART;VALUE=DATE:20261126
-DTEND;VALUE=DATE:20261127
+DTSTART;VALUE=DATE:20261029
+DTEND;VALUE=DATE:20261030
 DESCRIPTION:Release of stable2603-8 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-9 Cutoff
-DTSTART;VALUE=DATE:20261228
-DTEND;VALUE=DATE:20261229
+DTSTART;VALUE=DATE:20261123
+DTEND;VALUE=DATE:20261124
 DESCRIPTION:Cutoff for stable2603-9 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-9 Release
-DTSTART;VALUE=DATE:20261231
-DTEND;VALUE=DATE:20270101
+DTSTART;VALUE=DATE:20261126
+DTEND;VALUE=DATE:20261127
 DESCRIPTION:Release of stable2603-9 (planned)\n\nFull Calendar: https://gi
  thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-10 Cutoff
-DTSTART;VALUE=DATE:20270125
-DTEND;VALUE=DATE:20270126
+DTSTART;VALUE=DATE:20261228
+DTEND;VALUE=DATE:20261229
 DESCRIPTION:Cutoff for stable2603-10 (planned)\n\nFull Calendar: https://g
  ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-10 Release
-DTSTART;VALUE=DATE:20270128
-DTEND;VALUE=DATE:20270129
+DTSTART;VALUE=DATE:20261231
+DTEND;VALUE=DATE:20270101
 DESCRIPTION:Release of stable2603-10 (planned)\n\nFull Calendar: https://g
  ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-11 Cutoff
-DTSTART;VALUE=DATE:20270222
-DTEND;VALUE=DATE:20270223
+DTSTART;VALUE=DATE:20270125
+DTEND;VALUE=DATE:20270126
 DESCRIPTION:Cutoff for stable2603-11 (planned)\n\nFull Calendar: https://g
  ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-11 Release
-DTSTART;VALUE=DATE:20270225
-DTEND;VALUE=DATE:20270226
+DTSTART;VALUE=DATE:20270128
+DTEND;VALUE=DATE:20270129
 DESCRIPTION:Release of stable2603-11 (planned)\n\nFull Calendar: https://g
  ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-12 Cutoff
-DTSTART;VALUE=DATE:20270322
-DTEND;VALUE=DATE:20270323
+DTSTART;VALUE=DATE:20270222
+DTEND;VALUE=DATE:20270223
 DESCRIPTION:Cutoff for stable2603-12 (planned)\n\nFull Calendar: https://g
  ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
 SUMMARY:stable2603-12 Release
-DTSTART;VALUE=DATE:20270325
-DTEND;VALUE=DATE:20270326
+DTSTART;VALUE=DATE:20270225
+DTEND;VALUE=DATE:20270226
 DESCRIPTION:Release of stable2603-12 (planned)\n\nFull Calendar: https://g
  ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
 BEGIN:VEVENT
-SUMMARY:stable2603-13 Cutoff
-DTSTART;VALUE=DATE:20270426
-DTEND;VALUE=DATE:20270427
-DESCRIPTION:Cutoff for stable2603-13 (planned)\n\nFull Calendar: https://g
- ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
-END:VEVENT
-BEGIN:VEVENT
-SUMMARY:stable2603-13 Release
-DTSTART;VALUE=DATE:20270429
-DTEND;VALUE=DATE:20270430
-DESCRIPTION:Release of stable2603-13 (planned)\n\nFull Calendar: https://g
- ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
-END:VEVENT
-BEGIN:VEVENT
 SUMMARY:stable2606 Cutoff
 DTSTART;VALUE=DATE:20260518
 DTEND;VALUE=DATE:20260519
diff --git a/releases-v1.json b/releases-v1.json
index 83c34df..a2e5b6c 100644
--- a/releases-v1.json
+++ b/releases-v1.json
@@ -1292,10 +1292,10 @@
           {
             "name": "stable2603-4",
             "cutoff": {
-              "estimated": "2026-07-27"
+              "estimated": "2026-06-22"
             },
             "publish": {
-              "estimated": "2026-07-30"
+              "estimated": "2026-06-25"
             },
             "state": "planned",
             "semver": "1.22.4"
@@ -1303,10 +1303,10 @@
           {
             "name": "stable2603-5",
             "cutoff": {
-              "estimated": "2026-08-24"
+              "estimated": "2026-07-27"
             },
             "publish": {
-              "estimated": "2026-08-27"
+              "estimated": "2026-07-30"
             },
             "state": "planned",
             "semver": "1.22.5"
@@ -1314,10 +1314,10 @@
           {
             "name": "stable2603-6",
             "cutoff": {
-              "estimated": "2026-09-28"
+              "estimated": "2026-08-24"
             },
             "publish": {
-              "estimated": "2026-10-01"
+              "estimated": "2026-08-27"
             },
             "state": "planned",
             "semver": "1.22.6"
@@ -1325,10 +1325,10 @@
           {
             "name": "stable2603-7",
             "cutoff": {
-              "estimated": "2026-10-26"
+              "estimated": "2026-09-28"
             },
             "publish": {
-              "estimated": "2026-10-29"
+              "estimated": "2026-10-01"
             },
             "state": "planned",
             "semver": "1.22.7"
@@ -1336,10 +1336,10 @@
           {
             "name": "stable2603-8",
             "cutoff": {
-              "estimated": "2026-11-23"
+              "estimated": "2026-10-26"
             },
             "publish": {
-              "estimated": "2026-11-26"
+              "estimated": "2026-10-29"
             },
             "state": "planned",
             "semver": "1.22.8"
@@ -1347,10 +1347,10 @@
           {
             "name": "stable2603-9",
             "cutoff": {
-              "estimated": "2026-12-28"
+              "estimated": "2026-11-23"
             },
             "publish": {
-              "estimated": "2026-12-31"
+              "estimated": "2026-11-26"
             },
             "state": "planned",
             "semver": "1.22.9"
@@ -1358,10 +1358,10 @@
           {
             "name": "stable2603-10",
             "cutoff": {
-              "estimated": "2027-01-25"
+              "estimated": "2026-12-28"
             },
             "publish": {
-              "estimated": "2027-01-28"
+              "estimated": "2026-12-31"
             },
             "state": "planned",
             "semver": "1.22.10"
@@ -1369,10 +1369,10 @@
           {
             "name": "stable2603-11",
             "cutoff": {
-              "estimated": "2027-02-22"
+              "estimated": "2027-01-25"
             },
             "publish": {
-              "estimated": "2027-02-25"
+              "estimated": "2027-01-28"
             },
             "state": "planned",
             "semver": "1.22.11"
@@ -1380,24 +1380,13 @@
           {
             "name": "stable2603-12",
             "cutoff": {
-              "estimated": "2027-03-22"
+              "estimated": "2027-02-22"
             },
             "publish": {
-              "estimated": "2027-03-25"
+              "estimated": "2027-02-25"
             },
             "state": "planned",
             "semver": "1.22.12"
-          },
-          {
-            "name": "stable2603-13",
-            "cutoff": {
-              "estimated": "2027-04-26"
-            },
-            "publish": {
-              "estimated": "2027-04-29"
-            },
-            "state": "planned",
-            "semver": "1.22.13"
           }
         ]
       },