Update boilerplate text in Release Notes

It's taken from 9.16 branch, with dates updated and reference to CHANGES
file removed. Note on Version Numbering was was already removed in !3517.

diff --git a/doc/arm/notes.rst b/doc/arm/notes.rst
index 7a0c6a6f9e0c9cf0e4d75ba2feefbc8152156aee..261256214f1b42c567018e30afa6223fafb1181f 100644 (file)
--- a/doc/arm/notes.rst
+++ b/doc/arm/notes.rst
@@ -17,12 +17,9 @@ Release Notes
 Introduction
 ------------
 
-BIND 9.17 is an unstable development release of BIND. This document
-summarizes new features and functional changes that have been introduced
-on this branch. With each development release leading up to the stable
-BIND 9.18 release, this document will be updated with additional
-features added and bugs fixed. Please see the CHANGES file for a more
-detailed list of changes and bug fixes.
+BIND 9.18 is a stable branch, suitable for production use. This
+document summarizes significant changes since the last production
+release on that branch.
 
 Supported Platforms
 -------------------
@@ -75,13 +72,11 @@ https://www.isc.org/contact/.
 End of Life
 -----------
 
-BIND 9.17 is an unstable development branch. When its development is
-complete, it will be renamed to BIND 9.18, which will be a stable
-branch. The end-of-life date for BIND 9.18 has not yet been determined.
-For those needing long-term stability, the current Extended Support
-Version (ESV) is BIND 9.11, which will be supported until at least
-December 2021. See https://kb.isc.org/docs/aa-00896 for details of
-ISC's software support policy.
+BIND 9.18 is a stable branch, suitable for production use. After it has been
+in production use for a while it will be designated as an Extended Support
+Version (ESV). Until then, the current ESV is BIND 9.16, which will be
+supported until at least December 2023.  See https://kb.isc.org/docs/aa-00896
+for details of ISC's software support policy.
 
 Thank You
 ---------