diff --git a/include/release-cycle.json b/include/release-cycle.json
index 214871b64..1e6aaa206 100644
--- a/include/release-cycle.json
+++ b/include/release-cycle.json
@@ -3,6 +3,7 @@
     "branch": "main",
     "pep": 790,
     "status": "feature",
+    "beta_release": "2026-05-05",
     "first_release": "2026-10-01",
     "end_of_life": "2031-10",
     "release_manager": "Hugo van Kemenade"
@@ -11,6 +12,7 @@
     "branch": "3.14",
     "pep": 745,
     "status": "prerelease",
+    "beta_release": "2025-05-07",
     "first_release": "2025-10-07",
     "end_of_life": "2030-10",
     "release_manager": "Hugo van Kemenade"
@@ -19,6 +21,7 @@
     "branch": "3.13",
     "pep": 719,
     "status": "bugfix",
+    "beta_release": "2024-05-08",
     "first_release": "2024-10-07",
     "end_of_life": "2029-10",
     "release_manager": "Thomas Wouters"
@@ -27,6 +30,7 @@
     "branch": "3.12",
     "pep": 693,
     "status": "security",
+    "beta_release": "2023-05-22",
     "first_release": "2023-10-02",
     "end_of_life": "2028-10",
     "release_manager": "Thomas Wouters"
@@ -35,6 +39,7 @@
     "branch": "3.11",
     "pep": 664,
     "status": "security",
+    "beta_release": "2022-05-08",
     "first_release": "2022-10-24",
     "end_of_life": "2027-10",
     "release_manager": "Pablo Galindo Salgado"
@@ -43,6 +48,7 @@
     "branch": "3.10",
     "pep": 619,
     "status": "security",
+    "beta_release": "2021-05-03",
     "first_release": "2021-10-04",
     "end_of_life": "2026-10",
     "release_manager": "Pablo Galindo Salgado"
@@ -51,6 +57,7 @@
     "branch": "3.9",
     "pep": 596,
     "status": "security",
+    "beta_release": "2020-05-18",
     "first_release": "2020-10-05",
     "end_of_life": "2025-10",
     "release_manager": "Łukasz Langa"
@@ -59,6 +66,7 @@
     "branch": "3.8",
     "pep": 569,
     "status": "end-of-life",
+    "beta_release": "2019-06-04",
     "first_release": "2019-10-14",
     "end_of_life": "2024-10-07",
     "release_manager": "Łukasz Langa"
@@ -67,6 +75,7 @@
     "branch": "3.7",
     "pep": 537,
     "status": "end-of-life",
+    "beta_release": "2018-01-31",
     "first_release": "2018-06-27",
     "end_of_life": "2023-06-27",
     "release_manager": "Ned Deily"
@@ -75,6 +84,7 @@
     "branch": "3.6",
     "pep": 494,
     "status": "end-of-life",
+    "beta_release": "2016-09-12",
     "first_release": "2016-12-23",
     "end_of_life": "2021-12-23",
     "release_manager": "Ned Deily"
@@ -83,6 +93,7 @@
     "branch": "3.5",
     "pep": 478,
     "status": "end-of-life",
+    "beta_release": "2015-05-24",
     "first_release": "2015-09-13",
     "end_of_life": "2020-09-30",
     "release_manager": "Larry Hastings"
@@ -91,6 +102,7 @@
     "branch": "3.4",
     "pep": 429,
     "status": "end-of-life",
+    "beta_release": "2013-11-24",
     "first_release": "2014-03-16",
     "end_of_life": "2019-03-18",
     "release_manager": "Larry Hastings"
@@ -99,6 +111,7 @@
     "branch": "3.3",
     "pep": 398,
     "status": "end-of-life",
+    "beta_release": "2012-06-27",
     "first_release": "2012-09-29",
     "end_of_life": "2017-09-29",
     "release_manager": "Georg Brandl, Ned Deily (3.3.7+)"
@@ -107,6 +120,7 @@
     "branch": "3.2",
     "pep": 392,
     "status": "end-of-life",
+    "beta_release": "2010-12-06",
     "first_release": "2011-02-20",
     "end_of_life": "2016-02-20",
     "release_manager": "Georg Brandl"
@@ -115,6 +129,7 @@
     "branch": "2.7",
     "pep": 373,
     "status": "end-of-life",
+    "beta_release": "2010-04-03",
     "first_release": "2010-07-03",
     "end_of_life": "2020-01-01",
     "release_manager": "Benjamin Peterson"
@@ -123,6 +138,7 @@
     "branch": "3.1",
     "pep": 375,
     "status": "end-of-life",
+    "beta_release": "2009-05-06",
     "first_release": "2009-06-27",
     "end_of_life": "2012-04-09",
     "release_manager": "Benjamin Peterson"
@@ -131,6 +147,7 @@
     "branch": "3.0",
     "pep": 361,
     "status": "end-of-life",
+    "beta_release": "2008-06-18",
     "first_release": "2008-12-03",
     "end_of_life": "2009-06-27",
     "release_manager": "Barry Warsaw"
@@ -139,6 +156,7 @@
     "branch": "2.6",
     "pep": 361,
     "status": "end-of-life",
+    "beta_release": "2008-06-18",
     "first_release": "2008-10-01",
     "end_of_life": "2013-10-29",
     "release_manager": "Barry Warsaw"

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