maint: post-release administrivia

* NEWS: Add header line for next release.
* .prev-version: Record previous version.
* cfg.mk (old_NEWS_hash): Auto-update.

3 files changed, 5 insertions, 2 deletions

diff --git a/.prev-version b/.prev-version
index cc1923a4..bd28b9c5 100644
--- a/.prev-version
+++ b/.prev-version
@@ -1 +1 @@
-3.8
+3.9
diff --git a/NEWS b/NEWS
index 526085a4..803e14b3 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,8 @@
 GNU grep NEWS                                    -*- outline -*-
 
+* Noteworthy changes in release ?.? (????-??-??) [?]
+
+
 * Noteworthy changes in release 3.9 (2023-03-05) [stable]
 
 ** Bug fixes
diff --git a/cfg.mk b/cfg.mk
index bbe6df9a..66421769 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -68,7 +68,7 @@ export VERBOSE = yes
 # 1127556 9e
 export XZ_OPT = -6e
 
-old_NEWS_hash = 5c1796327f2c4c7f40e10e58fd3a8019
+old_NEWS_hash = cfaf2cc980f8b40c42c45f2fa7d764f2
 
 # We prefer to spell it back-reference, as POSIX does.
 sc_prohibit_backref: