[pep-602] Sell the annual nature harder

pep-0602.rst

@@ -16,7 +16,8 @@ Abstract
 
 This document describes a change in the release calendar for Python
 starting with Python 3.9.  This change accelerates the release cadence
-such that major versions are released every twelve months.
+such that major versions are released predictably every twelve months,
+in October every year.
 
 
 Implementation
@@ -109,7 +110,9 @@ This change provides the following advantages:
 
 - creates a predictable calendar for releases where the final release is
   always in October (so after the annual core sprint), and the beta
-  phase starts in late May (so after PyCon US sprints);
+  phase starts in late May (so after PyCon US sprints), which is
+  especially important for core developers who need to plan to include
+  Python involvement in their calendar;
 
 - decreases the urge to rush features shortly before "Beta 1" due to
   the risk of them "slipping for 18 months";