diff --git a/.assets/timeline-gantt.png b/.assets/timeline-gantt.png
index d49de29..f6af174 100644
Binary files a/.assets/timeline-gantt.png and b/.assets/timeline-gantt.png differ
diff --git a/CALENDAR.md b/CALENDAR.md
index e413e62..1cb6022 100644
--- a/CALENDAR.md
+++ b/CALENDAR.md
@@ -8,6 +8,20 @@ Full untruncated version index.
 
 | Version | SemVer | Cutoff | Publish | End of Life | State |
 |---------|--------|--------|---------|-------------|-------|
+| **stable2612** | 1.26.0 | 2026-11-09 | 2026-12-24 | 2027-12-24 | Planned |
+|   stable2612-1 | 1.26.1 | 2027-01-18 | 2027-01-21 |  | Planned |
+|   stable2612-2 | 1.26.2 | 2027-02-15 | 2027-02-18 |  | Planned |
+|   stable2612-3 | 1.26.3 | 2027-03-15 | 2027-03-18 |  | Planned |
+|   stable2612-4 | 1.26.4 | 2027-04-19 | 2027-04-22 |  | Planned |
+|   stable2612-5 | 1.26.5 | 2027-05-17 | 2027-05-20 |  | Planned |
+|   stable2612-6 | 1.26.6 | 2027-06-21 | 2027-06-24 |  | Planned |
+|   stable2612-7 | 1.26.7 | 2027-07-19 | 2027-07-22 |  | Planned |
+|   stable2612-8 | 1.26.8 | 2027-08-16 | 2027-08-19 |  | Planned |
+|   stable2612-9 | 1.26.9 | 2027-09-20 | 2027-09-23 |  | Planned |
+|   stable2612-10 | 1.26.10 | 2027-10-18 | 2027-10-21 |  | Planned |
+|   stable2612-11 | 1.26.11 | 2027-11-15 | 2027-11-18 |  | Planned |
+|   stable2612-12 | 1.26.12 | 2027-12-20 | 2027-12-23 |  | Planned |
+|   stable2612-13 | 1.26.13 | 2028-01-17 | 2028-01-20 |  | Planned |
 | **stable2609** | 1.25.0 | 2026-08-17 | 2026-10-01 | 2027-10-01 | Planned |
 |   stable2609-1 | 1.25.1 | 2026-11-09 | 2026-11-12 |  | Planned |
 |   stable2609-2 | 1.25.2 | 2026-12-14 | 2026-12-17 |  | Planned |
diff --git a/README.md b/README.md
index 071c200..b09807f 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,10 @@ Planned and historic release dates:
 
 | Version | SemVer | Cutoff | Publish | End of Life | State |
 |---------|--------|--------|---------|-------------|-------|
+| **stable2612** | 1.26.0 | 2026-11-09 | 2026-12-24 | 2027-12-24 | Planned |
+|   stable2612-1 | 1.26.1 | 2027-01-18 | 2027-01-21 |  | Planned |
+|   stable2612-2 | 1.26.2 | 2027-02-15 | 2027-02-18 |  | Planned |
+|   [11 more planned](CALENDAR.md) |  |  | | |
 | **stable2609** | 1.25.0 | 2026-08-17 | 2026-10-01 | 2027-10-01 | Planned |
 |   stable2609-1 | 1.25.1 | 2026-11-09 | 2026-11-12 |  | Planned |
 |   stable2609-2 | 1.25.2 | 2026-12-14 | 2026-12-17 |  | Planned |
diff --git a/releases-v1.ics b/releases-v1.ics
index 6ce3473..40d2e3b 100644
--- a/releases-v1.ics
+++ b/releases-v1.ics
@@ -2049,4 +2049,207 @@ DTEND;VALUE=DATE:20270917
 DESCRIPTION:Release of stable2609-11 (planned)\n\nFull Calendar: https://g
  ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
 END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612 Cutoff
+DTSTART;VALUE=DATE:20261109
+DTEND;VALUE=DATE:20261110
+DESCRIPTION:Cutoff for stable2612 (planned)\n\nFull Calendar: https://gith
+ ub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612 Release
+DTSTART;VALUE=DATE:20261224
+DTEND;VALUE=DATE:20261225
+DESCRIPTION:Release of stable2612 (planned)\n\nFull Calendar: https://gith
+ ub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612 End of Life
+DTSTART;VALUE=DATE:20271224
+DTEND;VALUE=DATE:20271225
+DESCRIPTION:End of Life for stable2612\n\nFull Calendar: https://github.co
+ m/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-1 Cutoff
+DTSTART;VALUE=DATE:20270118
+DTEND;VALUE=DATE:20270119
+DESCRIPTION:Cutoff for stable2612-1 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-1 Release
+DTSTART;VALUE=DATE:20270121
+DTEND;VALUE=DATE:20270122
+DESCRIPTION:Release of stable2612-1 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-2 Cutoff
+DTSTART;VALUE=DATE:20270215
+DTEND;VALUE=DATE:20270216
+DESCRIPTION:Cutoff for stable2612-2 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-2 Release
+DTSTART;VALUE=DATE:20270218
+DTEND;VALUE=DATE:20270219
+DESCRIPTION:Release of stable2612-2 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-3 Cutoff
+DTSTART;VALUE=DATE:20270315
+DTEND;VALUE=DATE:20270316
+DESCRIPTION:Cutoff for stable2612-3 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-3 Release
+DTSTART;VALUE=DATE:20270318
+DTEND;VALUE=DATE:20270319
+DESCRIPTION:Release of stable2612-3 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-4 Cutoff
+DTSTART;VALUE=DATE:20270419
+DTEND;VALUE=DATE:20270420
+DESCRIPTION:Cutoff for stable2612-4 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-4 Release
+DTSTART;VALUE=DATE:20270422
+DTEND;VALUE=DATE:20270423
+DESCRIPTION:Release of stable2612-4 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-5 Cutoff
+DTSTART;VALUE=DATE:20270517
+DTEND;VALUE=DATE:20270518
+DESCRIPTION:Cutoff for stable2612-5 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-5 Release
+DTSTART;VALUE=DATE:20270520
+DTEND;VALUE=DATE:20270521
+DESCRIPTION:Release of stable2612-5 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-6 Cutoff
+DTSTART;VALUE=DATE:20270621
+DTEND;VALUE=DATE:20270622
+DESCRIPTION:Cutoff for stable2612-6 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-6 Release
+DTSTART;VALUE=DATE:20270624
+DTEND;VALUE=DATE:20270625
+DESCRIPTION:Release of stable2612-6 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-7 Cutoff
+DTSTART;VALUE=DATE:20270719
+DTEND;VALUE=DATE:20270720
+DESCRIPTION:Cutoff for stable2612-7 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-7 Release
+DTSTART;VALUE=DATE:20270722
+DTEND;VALUE=DATE:20270723
+DESCRIPTION:Release of stable2612-7 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-8 Cutoff
+DTSTART;VALUE=DATE:20270816
+DTEND;VALUE=DATE:20270817
+DESCRIPTION:Cutoff for stable2612-8 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-8 Release
+DTSTART;VALUE=DATE:20270819
+DTEND;VALUE=DATE:20270820
+DESCRIPTION:Release of stable2612-8 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-9 Cutoff
+DTSTART;VALUE=DATE:20270920
+DTEND;VALUE=DATE:20270921
+DESCRIPTION:Cutoff for stable2612-9 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-9 Release
+DTSTART;VALUE=DATE:20270923
+DTEND;VALUE=DATE:20270924
+DESCRIPTION:Release of stable2612-9 (planned)\n\nFull Calendar: https://gi
+ thub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-10 Cutoff
+DTSTART;VALUE=DATE:20271018
+DTEND;VALUE=DATE:20271019
+DESCRIPTION:Cutoff for stable2612-10 (planned)\n\nFull Calendar: https://g
+ ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-10 Release
+DTSTART;VALUE=DATE:20271021
+DTEND;VALUE=DATE:20271022
+DESCRIPTION:Release of stable2612-10 (planned)\n\nFull Calendar: https://g
+ ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-11 Cutoff
+DTSTART;VALUE=DATE:20271115
+DTEND;VALUE=DATE:20271116
+DESCRIPTION:Cutoff for stable2612-11 (planned)\n\nFull Calendar: https://g
+ ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-11 Release
+DTSTART;VALUE=DATE:20271118
+DTEND;VALUE=DATE:20271119
+DESCRIPTION:Release of stable2612-11 (planned)\n\nFull Calendar: https://g
+ ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-12 Cutoff
+DTSTART;VALUE=DATE:20271220
+DTEND;VALUE=DATE:20271221
+DESCRIPTION:Cutoff for stable2612-12 (planned)\n\nFull Calendar: https://g
+ ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-12 Release
+DTSTART;VALUE=DATE:20271223
+DTEND;VALUE=DATE:20271224
+DESCRIPTION:Release of stable2612-12 (planned)\n\nFull Calendar: https://g
+ ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-13 Cutoff
+DTSTART;VALUE=DATE:20280117
+DTEND;VALUE=DATE:20280118
+DESCRIPTION:Cutoff for stable2612-13 (planned)\n\nFull Calendar: https://g
+ ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
+BEGIN:VEVENT
+SUMMARY:stable2612-13 Release
+DTSTART;VALUE=DATE:20280120
+DTEND;VALUE=DATE:20280121
+DESCRIPTION:Release of stable2612-13 (planned)\n\nFull Calendar: https://g
+ ithub.com/paritytech/release-registry/blob/main/CALENDAR.md#calendar
+END:VEVENT
 END:VCALENDAR
diff --git a/releases-v1.json b/releases-v1.json
index 6c3e8ed..6d98059 100644
--- a/releases-v1.json
+++ b/releases-v1.json
@@ -1742,6 +1742,165 @@
             "semver": "1.25.11"
           }
         ]
+      },
+      {
+        "name": "stable2612",
+        "semver": "1.26.0",
+        "cutoff": {
+          "estimated": "2026-11-09"
+        },
+        "publish": {
+          "estimated": "2026-12-24"
+        },
+        "state": "planned",
+        "endOfLife": {
+          "estimated": "2027-12-24"
+        },
+        "patches": [
+          {
+            "name": "stable2612-1",
+            "cutoff": {
+              "estimated": "2027-01-18"
+            },
+            "publish": {
+              "estimated": "2027-01-21"
+            },
+            "state": "planned",
+            "semver": "1.26.1"
+          },
+          {
+            "name": "stable2612-2",
+            "cutoff": {
+              "estimated": "2027-02-15"
+            },
+            "publish": {
+              "estimated": "2027-02-18"
+            },
+            "state": "planned",
+            "semver": "1.26.2"
+          },
+          {
+            "name": "stable2612-3",
+            "cutoff": {
+              "estimated": "2027-03-15"
+            },
+            "publish": {
+              "estimated": "2027-03-18"
+            },
+            "state": "planned",
+            "semver": "1.26.3"
+          },
+          {
+            "name": "stable2612-4",
+            "cutoff": {
+              "estimated": "2027-04-19"
+            },
+            "publish": {
+              "estimated": "2027-04-22"
+            },
+            "state": "planned",
+            "semver": "1.26.4"
+          },
+          {
+            "name": "stable2612-5",
+            "cutoff": {
+              "estimated": "2027-05-17"
+            },
+            "publish": {
+              "estimated": "2027-05-20"
+            },
+            "state": "planned",
+            "semver": "1.26.5"
+          },
+          {
+            "name": "stable2612-6",
+            "cutoff": {
+              "estimated": "2027-06-21"
+            },
+            "publish": {
+              "estimated": "2027-06-24"
+            },
+            "state": "planned",
+            "semver": "1.26.6"
+          },
+          {
+            "name": "stable2612-7",
+            "cutoff": {
+              "estimated": "2027-07-19"
+            },
+            "publish": {
+              "estimated": "2027-07-22"
+            },
+            "state": "planned",
+            "semver": "1.26.7"
+          },
+          {
+            "name": "stable2612-8",
+            "cutoff": {
+              "estimated": "2027-08-16"
+            },
+            "publish": {
+              "estimated": "2027-08-19"
+            },
+            "state": "planned",
+            "semver": "1.26.8"
+          },
+          {
+            "name": "stable2612-9",
+            "cutoff": {
+              "estimated": "2027-09-20"
+            },
+            "publish": {
+              "estimated": "2027-09-23"
+            },
+            "state": "planned",
+            "semver": "1.26.9"
+          },
+          {
+            "name": "stable2612-10",
+            "cutoff": {
+              "estimated": "2027-10-18"
+            },
+            "publish": {
+              "estimated": "2027-10-21"
+            },
+            "state": "planned",
+            "semver": "1.26.10"
+          },
+          {
+            "name": "stable2612-11",
+            "cutoff": {
+              "estimated": "2027-11-15"
+            },
+            "publish": {
+              "estimated": "2027-11-18"
+            },
+            "state": "planned",
+            "semver": "1.26.11"
+          },
+          {
+            "name": "stable2612-12",
+            "cutoff": {
+              "estimated": "2027-12-20"
+            },
+            "publish": {
+              "estimated": "2027-12-23"
+            },
+            "state": "planned",
+            "semver": "1.26.12"
+          },
+          {
+            "name": "stable2612-13",
+            "cutoff": {
+              "estimated": "2028-01-17"
+            },
+            "publish": {
+              "estimated": "2028-01-20"
+            },
+            "state": "planned",
+            "semver": "1.26.13"
+          }
+        ]
       }
     ],
     "changelog": "https://github.com/paritytech/polkadot-sdk/releases/tag/$TAG"