diff --git a/Makefile b/Makefile
index 15c8e87..ae8045e 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,7 @@
 #
 TMPDIR     ?= /tmp
 DIST_PREFIX = ${TMPDIR}
-VERSION     = 4.8.1~dev
+VERSION     = 4.9~dev
 DEBVERSION  = $(shell echo $(VERSION)|sed 's/\(rc\|pre\|beta\|alpha\)/~\1/')
 BASE        = xen-tools
 VCS         = git
diff --git a/NEWS.markdown b/NEWS.markdown
index 35cb53e..3656cb8 100644
--- a/NEWS.markdown
+++ b/NEWS.markdown
@@ -1,5 +1,13 @@
-xen-tools 4.8.1 (UNRELEASED)
-===================================
+xen-tools 4.9 (UNRELEASED)
+==========================
+
+New Features
+------------
+
+* Add Debian install rules for arm64. (GH #62; PR by Ian McLinden
+  @ianmclinden)
+* Add netplan p2p support for Ubuntu. (GH #58; PR by Volker Janzen
+  @frootmig)
 
 Bug Fixes
 ---------
@@ -8,6 +16,14 @@ Bug Fixes
 * Makefile: Actually install xen-resize-guest tool. (Thanks to
   Debian's Lintian tool reporting that there is a man-page without
   binary installed!)
+* Distinguish between those Debian releases using `$dist/updates` for
+  security updates and those who use `$dist-security`. Thanks to Paul
+  Wise for the bug report. (Closes Debian bug report #972749.)
+* Fix support for `lvm_thin`. Thanks to Andreas Sundstrom for the bug
+  report and patch! (Closes Debian bug report #942244.)
+* Mount `/proc` and `/dev` before calling update-grub. Thanks to
+  Brandon Bradley for the bug report and patch. (Closes Debian bug
+  report #815021.)
 
 Distribution Releases Changes
 -----------------------------
diff --git a/bin/xen-create-image b/bin/xen-create-image
index ce1ac49..1ff3f70 100755
--- a/bin/xen-create-image
+++ b/bin/xen-create-image
@@ -872,7 +872,7 @@ my $MOUNT_POINT = undef;
 #
 # Release number.
 #
-my $RELEASE = '4.8.1~dev';
+my $RELEASE = '4.9~dev';
 
 
 #
diff --git a/bin/xen-create-nfs b/bin/xen-create-nfs
index c874812..b6dc6bf 100755
--- a/bin/xen-create-nfs
+++ b/bin/xen-create-nfs
@@ -121,7 +121,7 @@ $CONFIG{ 'template' } = '/etc/xen-tools/xm-nfs.tmpl';
 #
 # Release number.
 #
-my $RELEASE = '4.8.1~dev';
+my $RELEASE = '4.9~dev';
 
 
 # store version number away.
diff --git a/bin/xen-delete-image b/bin/xen-delete-image
index 2cfead3..173969c 100755
--- a/bin/xen-delete-image
+++ b/bin/xen-delete-image
@@ -167,7 +167,7 @@ my %CONFIG;
 #
 # Release number.
 #
-my $RELEASE = '4.8.1~dev';
+my $RELEASE = '4.9~dev';
 
 
 #
diff --git a/bin/xen-list-images b/bin/xen-list-images
index 1a27b81..bc8d446 100755
--- a/bin/xen-list-images
+++ b/bin/xen-list-images
@@ -106,7 +106,7 @@ $CONFIG{ 'extension' } = '.cfg';
 #
 # Release number.
 #
-my $RELEASE = '4.8.1~dev';
+my $RELEASE = '4.9~dev';
 
 
 
diff --git a/bin/xen-resize-guest b/bin/xen-resize-guest
index 40755e4..0d13205 100755
--- a/bin/xen-resize-guest
+++ b/bin/xen-resize-guest
@@ -111,7 +111,7 @@ my %CONFIG;
 #
 # Release number.
 #
-my $RELEASE = '4.8.1~dev';
+my $RELEASE = '4.9~dev';
 
 
 #
diff --git a/bin/xen-update-image b/bin/xen-update-image
index 48b5e79..fce7218 100755
--- a/bin/xen-update-image
+++ b/bin/xen-update-image
@@ -113,7 +113,7 @@ my %CONFIG;
 #
 # Release number.
 #
-my $RELEASE = '4.8.1~dev';
+my $RELEASE = '4.9~dev';
 
 
 #
diff --git a/bin/xt-create-xen-config b/bin/xt-create-xen-config
index b3b1085..e2c81da 100755
--- a/bin/xt-create-xen-config
+++ b/bin/xt-create-xen-config
@@ -148,7 +148,7 @@ $CONFIG{ 'extension' } = '.cfg';
 #
 # Release number.
 #
-my $RELEASE = '4.8.1~dev';
+my $RELEASE = '4.9~dev';
 
 
 
diff --git a/bin/xt-customize-image b/bin/xt-customize-image
index 02b2e9f..2b7ac4d 100755
--- a/bin/xt-customize-image
+++ b/bin/xt-customize-image
@@ -100,7 +100,7 @@ my %CONFIG;
 #
 # Release number.
 #
-my $RELEASE = '4.8.1~dev';
+my $RELEASE = '4.9~dev';
 
 
 
diff --git a/bin/xt-guess-suite-and-mirror b/bin/xt-guess-suite-and-mirror
index 7c4ba76..1d9ef74 100755
--- a/bin/xt-guess-suite-and-mirror
+++ b/bin/xt-guess-suite-and-mirror
@@ -79,7 +79,7 @@ use strict;
 #
 # Release number.
 #
-my $RELEASE = '4.8.1~dev';
+my $RELEASE = '4.9~dev';
 
 # Init
 my $mirror = '';
diff --git a/bin/xt-install-image b/bin/xt-install-image
index 32a5604..f889762 100755
--- a/bin/xt-install-image
+++ b/bin/xt-install-image
@@ -113,7 +113,7 @@ my %CONFIG;
 #
 # Release number.
 #
-my $RELEASE = '4.8.1~dev';
+my $RELEASE = '4.9~dev';
 
 
 #
diff --git a/debian/changelog b/debian/changelog
index bc46583..5a5e825 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,6 +1,6 @@
-xen-tools (4.8.1~dev-1) UNRELEASED; urgency=medium
+xen-tools (4.9~dev-1) UNRELEASED; urgency=medium
 
-  * New upstream bugfix release.
+  * New upstream bugfix and minor feature release.
     + Mark Debian 7 Wheezy and 8 Jessie as EoL.
     + Update list of Ubuntu and Debian releases.
     + distributions.conf: Fix typo in release name of future Debian 12