Update for 3.15, from PEP 790

Author: AA-Turner

release_engineering/python-releases.toml

@@ -3332,3 +3332,86 @@ date = 2025-08-26
 stage = "3.14.0 final"
 state = "expected"
 date = 2025-10-07
+
+# -- Python 3.15 --------------------------------------------------------------
+
+[metadata."3.15"]
+pep = 790
+#status =  # TODO! pre-branch status?
+#branch =   # TODO! pre-branch branch?
+release-manager = "Hugo van Kemenade"
+start-of-development = 2025-05-06
+first-release = 2026-10-01
+feature-freeze = 2026-05-05
+end-of-bugfix = 2028-10-01
+end-of-life = 2031-10-01
+
+[[release."3.15"]]
+stage = "3.15.0 alpha 1"
+state = "expected"
+date = 2025-10-14
+
+[[release."3.15"]]
+stage = "3.15.0 alpha 2"
+state = "expected"
+date = 2025-11-18
+
+[[release."3.15"]]
+stage = "3.15.0 alpha 3"
+state = "expected"
+date = 2025-12-16
+
+[[release."3.15"]]
+stage = "3.15.0 alpha 4"
+state = "expected"
+date = 2026-01-13
+
+[[release."3.15"]]
+stage = "3.15.0 alpha 5"
+state = "expected"
+date = 2026-02-10
+
+[[release."3.15"]]
+stage = "3.15.0 alpha 6"
+state = "expected"
+date = 2026-03-10
+
+[[release."3.15"]]
+stage = "3.15.0 alpha 7"
+state = "expected"
+date = 2026-04-07
+
+[[release."3.15"]]
+stage = "3.15.0 beta 1"
+state = "expected"
+date = 2026-05-05
+
+[[release."3.15"]]
+stage = "3.15.0 beta 2"
+state = "expected"
+date = 2026-05-26
+
+[[release."3.15"]]
+stage = "3.15.0 beta 3"
+state = "expected"
+date = 2026-06-16
+
+[[release."3.15"]]
+stage = "3.15.0 beta 4"
+state = "expected"
+date = 2026-07-14
+
+[[release."3.15"]]
+stage = "3.15.0 candidate 1"
+state = "expected"
+date = 2026-07-28
+
+[[release."3.15"]]
+stage = "3.15.0 candidate 2"
+state = "expected"
+date = 2026-09-01
+
+[[release."3.15"]]
+stage = "3.15.0 final"
+state = "expected"
+date = 2026-10-01