docs: Specify when branch points happen
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7149>
diff --git a/docs/releasing.rst b/docs/releasing.rst
index d196ce6..95ae6f5 100644
--- a/docs/releasing.rst
+++ b/docs/releasing.rst
@@ -35,6 +35,8 @@
----------------
- Available approximately every three months.
+- Feature releases are branched on or around the second Wednesday of
+ January, April, July, and October.
- Initial time plan available 2-4 weeks before the planned branchpoint
(rc1) on the mesa-announce@ mailing list.
- Typically, the final release will happen after 4 candidates.
