diff --git a/contrib/aur/bitcoin-abc-bchn/PKGBUILD b/contrib/aur/bitcoin-abc-bchn/PKGBUILD
index d3bf1a0d3..9999cd957 100644
--- a/contrib/aur/bitcoin-abc-bchn/PKGBUILD
+++ b/contrib/aur/bitcoin-abc-bchn/PKGBUILD
@@ -1,101 +1,101 @@
 # Maintainer: Fabien <fabcien@gmail.com>
 # Contributor: Josh Ellithorpe <quest@mac.com>
 
 pkgname=bitcoin-abc-bchn
-pkgver=0.22.8
+pkgver=0.22.9
 pkgrel=0
 pkgdesc="Bitcoin ABC (BCHN network) with bitcoind, bitcoin-tx, bitcoin-seeder and bitcoin-cli"
 arch=('i686' 'x86_64')
 url="https://bitcoinabc.org"
 depends=('boost-libs' 'libevent' 'openssl' 'zeromq' 'miniupnpc' 'jemalloc')
 makedepends=('cmake' 'ninja' 'boost' 'python' 'help2man')
 license=('MIT')
 source=(https://github.com/Bitcoin-ABC/bitcoin-abc/archive/v$pkgver.tar.gz
         bitcoin.conf
         bitcoin.logrotate
         bitcoin.service
         bitcoin-reindex.service
         bitcoin.install)
 backup=('etc/bitcoin/bitcoin.conf'
         'etc/logrotate.d/bitcoin')
 provides=('bitcoin-cli' 'bitcoin-daemon' 'bitcoin-tx' 'bitcoin-seeder')
 conflicts=('bitcoin-cli' 'bitcoin-daemon' 'bitcoin-tx' 'bitcoin-seeder')
 install=bitcoin.install
 
 build() {
   cd "$srcdir/bitcoin-abc-$pkgver"
 
   msg2 'Building...'
   mkdir -p build
   pushd build
 
   cmake -GNinja .. \
     -DENABLE_CLANG_TIDY=OFF \
     -DCLIENT_VERSION_IS_RELEASE=ON \
     -DENABLE_REDUCE_EXPORTS=ON \
     -DENABLE_STATIC_LIBSTDCXX=ON \
     -DBUILD_BITCOIN_WALLET=OFF \
     -DBUILD_BITCOIN_QT=OFF \
     -DNETWORK_COMPATIBILITY=BCHN \
     -DCMAKE_INSTALL_PREFIX=$pkgdir/usr
 
   ninja
   popd
 }
 
 check() {
   cd "$srcdir/bitcoin-abc-$pkgver/build"
 
   msg2 'Testing...'
   ninja check
 }
 
 package() {
   cd "$srcdir/bitcoin-abc-$pkgver"
 
   msg2 'Installing license...'
   install -Dm 644 COPYING -t "$pkgdir/usr/share/licenses/${pkgname}"
 
   msg2 'Installing examples...'
   install -Dm644 "contrib/debian/examples/bitcoin.conf" \
     -t "$pkgdir/usr/share/doc/bitcoin/examples"
 
   msg2 'Installing documentation...'
   install -dm 755 "$pkgdir/usr/share/doc/bitcoin"
   for _doc in \
     $(find doc -maxdepth 1 -type f -name "*.md" -printf '%f\n') \
     release-notes; do
       cp -dpr --no-preserve=ownership "doc/$_doc" \
         "$pkgdir/usr/share/doc/bitcoin/$_doc"
   done
 
   msg2 'Installing essential directories'
   install -dm 700 "$pkgdir/etc/bitcoin"
   install -dm 755 "$pkgdir/srv/bitcoin"
   install -dm 755 "$pkgdir/run/bitcoin"
 
   pushd build
   msg2 'Installing executables...'
   ninja install/strip
 
   msg2 'Installing man pages...'
   ninja install-manpages
   popd
 
   msg2 'Installing bitcoin.conf...'
   install -Dm 600 "$srcdir/bitcoin.conf" -t "$pkgdir/etc/bitcoin"
 
   msg2 'Installing bitcoin.service...'
   install -Dm 644 "$srcdir/bitcoin.service" -t "$pkgdir/usr/lib/systemd/system"
   install -Dm 644 "$srcdir/bitcoin-reindex.service" \
     -t "$pkgdir/usr/lib/systemd/system"
 
   msg2 'Installing bitcoin.logrotate...'
   install -Dm 644 "$srcdir/bitcoin.logrotate" "$pkgdir/etc/logrotate.d/bitcoin"
 
   msg2 'Installing bash completion...'
   for _compl in bitcoin-cli bitcoin-tx bitcoind; do
     install -Dm 644 "contrib/${_compl}.bash-completion" \
       "$pkgdir/usr/share/bash-completion/completions/$_compl"
   done
 }
diff --git a/contrib/aur/bitcoin-abc-qt-bchn/PKGBUILD b/contrib/aur/bitcoin-abc-qt-bchn/PKGBUILD
index 2cf02df9a..a72e12f5d 100644
--- a/contrib/aur/bitcoin-abc-qt-bchn/PKGBUILD
+++ b/contrib/aur/bitcoin-abc-qt-bchn/PKGBUILD
@@ -1,105 +1,105 @@
 # Maintainer: Fabien <fabcien@gmail.com>
 # Contributor: Josh Ellithorpe <quest@mac.com>
 
 pkgname=bitcoin-abc-qt-bchn
-pkgver=0.22.8
+pkgver=0.22.9
 pkgrel=0
 pkgdesc="Bitcoin ABC (BCHN network) with bitcoind, bitcoin-cli, bitcoin-tx, bitcoin-seeder and bitcoin-qt"
 arch=('i686' 'x86_64')
 url="https://bitcoinabc.org"
 depends=('boost-libs' 'libevent' 'desktop-file-utils' 'qt5-base' 'protobuf' 'openssl' 'miniupnpc' 'zeromq' 'qrencode' 'jemalloc')
 makedepends=('cmake' 'ninja' 'boost' 'qt5-tools' 'python' 'help2man' 'xorg-server-xvfb')
 license=('MIT')
 source=(https://github.com/Bitcoin-ABC/bitcoin-abc/archive/v$pkgver.tar.gz
         bitcoin.conf
         bitcoin.logrotate
         bitcoin.service
         bitcoin-reindex.service
         bitcoin.install)
 backup=('etc/bitcoin/bitcoin.conf'
         'etc/logrotate.d/bitcoin')
 provides=('bitcoin-cli' 'bitcoin-daemon' 'bitcoin-tx' 'bitcoin-qt' 'bitcoin-seeder' 'bitcoin-wallet')
 conflicts=('bitcoin-cli' 'bitcoin-daemon' 'bitcoin-tx' 'bitcoin-qt' 'bitcoin-seeder' 'bitcoin-wallet')
 install=bitcoin.install
 
 build() {
   cd "$srcdir/bitcoin-abc-$pkgver"
 
   msg2 'Building...'
   mkdir -p build
   pushd build
 
   cmake -GNinja .. \
     -DENABLE_CLANG_TIDY=OFF \
     -DCLIENT_VERSION_IS_RELEASE=ON \
     -DENABLE_REDUCE_EXPORTS=ON \
     -DENABLE_STATIC_LIBSTDCXX=ON \
     -DNETWORK_COMPATIBILITY=BCHN \
     -DCMAKE_INSTALL_PREFIX=$pkgdir/usr
 
   ninja
   popd
 }
 
 check() {
   cd "$srcdir/bitcoin-abc-$pkgver/build"
 
   msg2 'Testing...'
   ninja check
 }
 
 package() {
   cd "$srcdir/bitcoin-abc-$pkgver"
 
   msg2 'Installing desktop shortcut...'
   install -Dm644 contrib/debian/bitcoin-qt.desktop \
     "$pkgdir"/usr/share/applications/bitcoin.desktop
   install -Dm644 share/pixmaps/bitcoin-abc128.png \
     "$pkgdir"/usr/share/pixmaps/bitcoin-abc128.png
 
   msg2 'Installing license...'
   install -Dm 644 COPYING -t "$pkgdir/usr/share/licenses/${pkgname}"
 
   msg2 'Installing examples...'
   install -Dm644 "contrib/debian/examples/bitcoin.conf" \
     -t "$pkgdir/usr/share/doc/bitcoin/examples"
 
   msg2 'Installing documentation...'
   install -dm 755 "$pkgdir/usr/share/doc/bitcoin"
   for _doc in \
     $(find doc -maxdepth 1 -type f -name "*.md" -printf '%f\n') \
     release-notes; do
       cp -dpr --no-preserve=ownership "doc/$_doc" \
         "$pkgdir/usr/share/doc/bitcoin/$_doc"
   done
 
   msg2 'Installing essential directories'
   install -dm 700 "$pkgdir/etc/bitcoin"
   install -dm 755 "$pkgdir/srv/bitcoin"
   install -dm 755 "$pkgdir/run/bitcoin"
 
   pushd build
   msg2 'Installing executables...'
   ninja install/strip
 
   msg2 'Installing man pages...'
   xvfb-run ninja install-manpages
   popd
 
   msg2 'Installing bitcoin.conf...'
   install -Dm 600 "$srcdir/bitcoin.conf" -t "$pkgdir/etc/bitcoin"
 
   msg2 'Installing bitcoin.service...'
   install -Dm 644 "$srcdir/bitcoin.service" -t "$pkgdir/usr/lib/systemd/system"
   install -Dm 644 "$srcdir/bitcoin-reindex.service" \
     -t "$pkgdir/usr/lib/systemd/system"
 
   msg2 'Installing bitcoin.logrotate...'
   install -Dm 644 "$srcdir/bitcoin.logrotate" "$pkgdir/etc/logrotate.d/bitcoin"
 
   msg2 'Installing bash completion...'
   for _compl in bitcoin-cli bitcoin-tx bitcoind; do
     install -Dm 644 "contrib/${_compl}.bash-completion" \
       "$pkgdir/usr/share/bash-completion/completions/$_compl"
   done
 }
diff --git a/contrib/aur/bitcoin-abc-qt/PKGBUILD b/contrib/aur/bitcoin-abc-qt/PKGBUILD
index 787ad7d18..7dc7e23f1 100644
--- a/contrib/aur/bitcoin-abc-qt/PKGBUILD
+++ b/contrib/aur/bitcoin-abc-qt/PKGBUILD
@@ -1,103 +1,103 @@
 # Maintainer: Josh Ellithorpe <quest@mac.com>
 
 pkgname=bitcoin-abc-qt
-pkgver=0.22.8
+pkgver=0.22.9
 pkgrel=0
 pkgdesc="Bitcoin ABC (ABC network) with bitcoind, bitcoin-cli, bitcoin-tx, bitcoin-seeder and bitcoin-qt"
 arch=('i686' 'x86_64')
 url="https://bitcoinabc.org"
 depends=('boost-libs' 'libevent' 'desktop-file-utils' 'qt5-base' 'protobuf' 'openssl' 'miniupnpc' 'zeromq' 'qrencode' 'jemalloc')
 makedepends=('cmake' 'ninja' 'boost' 'qt5-tools' 'python' 'help2man' 'xorg-server-xvfb')
 license=('MIT')
 source=(https://github.com/Bitcoin-ABC/bitcoin-abc/archive/v$pkgver.tar.gz
         bitcoin.conf
         bitcoin.logrotate
         bitcoin.service
         bitcoin-reindex.service
         bitcoin.install)
 backup=('etc/bitcoin/bitcoin.conf'
         'etc/logrotate.d/bitcoin')
 provides=('bitcoin-cli' 'bitcoin-daemon' 'bitcoin-tx' 'bitcoin-qt' 'bitcoin-seeder' 'bitcoin-wallet')
 conflicts=('bitcoin-cli' 'bitcoin-daemon' 'bitcoin-tx' 'bitcoin-qt' 'bitcoin-seeder' 'bitcoin-wallet')
 install=bitcoin.install
 
 build() {
   cd "$srcdir/bitcoin-abc-$pkgver"
 
   msg2 'Building...'
   mkdir -p build
   pushd build
 
   cmake -GNinja .. \
     -DENABLE_CLANG_TIDY=OFF \
     -DCLIENT_VERSION_IS_RELEASE=ON \
     -DENABLE_REDUCE_EXPORTS=ON \
     -DENABLE_STATIC_LIBSTDCXX=ON \
     -DCMAKE_INSTALL_PREFIX=$pkgdir/usr
 
   ninja
   popd
 }
 
 check() {
   cd "$srcdir/bitcoin-abc-$pkgver/build"
 
   msg2 'Testing...'
   ninja check
 }
 
 package() {
   cd "$srcdir/bitcoin-abc-$pkgver"
 
   msg2 'Installing desktop shortcut...'
   install -Dm644 contrib/debian/bitcoin-qt.desktop \
     "$pkgdir"/usr/share/applications/bitcoin.desktop
   install -Dm644 share/pixmaps/bitcoin-abc128.png \
     "$pkgdir"/usr/share/pixmaps/bitcoin-abc128.png
 
   msg2 'Installing license...'
   install -Dm 644 COPYING -t "$pkgdir/usr/share/licenses/${pkgname}"
 
   msg2 'Installing examples...'
   install -Dm644 "contrib/debian/examples/bitcoin.conf" \
     -t "$pkgdir/usr/share/doc/bitcoin/examples"
 
   msg2 'Installing documentation...'
   install -dm 755 "$pkgdir/usr/share/doc/bitcoin"
   for _doc in \
     $(find doc -maxdepth 1 -type f -name "*.md" -printf '%f\n') \
     release-notes; do
       cp -dpr --no-preserve=ownership "doc/$_doc" \
         "$pkgdir/usr/share/doc/bitcoin/$_doc"
   done
 
   msg2 'Installing essential directories'
   install -dm 700 "$pkgdir/etc/bitcoin"
   install -dm 755 "$pkgdir/srv/bitcoin"
   install -dm 755 "$pkgdir/run/bitcoin"
 
   pushd build
   msg2 'Installing executables...'
   ninja install/strip
 
   msg2 'Installing man pages...'
   xvfb-run ninja install-manpages
   popd
 
   msg2 'Installing bitcoin.conf...'
   install -Dm 600 "$srcdir/bitcoin.conf" -t "$pkgdir/etc/bitcoin"
 
   msg2 'Installing bitcoin.service...'
   install -Dm 644 "$srcdir/bitcoin.service" -t "$pkgdir/usr/lib/systemd/system"
   install -Dm 644 "$srcdir/bitcoin-reindex.service" \
     -t "$pkgdir/usr/lib/systemd/system"
 
   msg2 'Installing bitcoin.logrotate...'
   install -Dm 644 "$srcdir/bitcoin.logrotate" "$pkgdir/etc/logrotate.d/bitcoin"
 
   msg2 'Installing bash completion...'
   for _compl in bitcoin-cli bitcoin-tx bitcoind; do
     install -Dm 644 "contrib/${_compl}.bash-completion" \
       "$pkgdir/usr/share/bash-completion/completions/$_compl"
   done
 }
diff --git a/contrib/aur/bitcoin-abc/PKGBUILD b/contrib/aur/bitcoin-abc/PKGBUILD
index 38edfafbd..26a043fd8 100644
--- a/contrib/aur/bitcoin-abc/PKGBUILD
+++ b/contrib/aur/bitcoin-abc/PKGBUILD
@@ -1,99 +1,99 @@
 # Maintainer: Josh Ellithorpe <quest@mac.com>
 
 pkgname=bitcoin-abc
-pkgver=0.22.8
+pkgver=0.22.9
 pkgrel=0
 pkgdesc="Bitcoin ABC (ABC network) with bitcoind, bitcoin-tx, bitcoin-seeder and bitcoin-cli"
 arch=('i686' 'x86_64')
 url="https://bitcoinabc.org"
 depends=('boost-libs' 'libevent' 'openssl' 'zeromq' 'miniupnpc' 'jemalloc')
 makedepends=('cmake' 'ninja' 'boost' 'python' 'help2man')
 license=('MIT')
 source=(https://github.com/Bitcoin-ABC/bitcoin-abc/archive/v$pkgver.tar.gz
         bitcoin.conf
         bitcoin.logrotate
         bitcoin.service
         bitcoin-reindex.service
         bitcoin.install)
 backup=('etc/bitcoin/bitcoin.conf'
         'etc/logrotate.d/bitcoin')
 provides=('bitcoin-cli' 'bitcoin-daemon' 'bitcoin-tx' 'bitcoin-seeder')
 conflicts=('bitcoin-cli' 'bitcoin-daemon' 'bitcoin-tx' 'bitcoin-seeder')
 install=bitcoin.install
 
 build() {
   cd "$srcdir/${pkgname}-$pkgver"
 
   msg2 'Building...'
   mkdir -p build
   pushd build
 
   cmake -GNinja .. \
     -DENABLE_CLANG_TIDY=OFF \
     -DCLIENT_VERSION_IS_RELEASE=ON \
     -DENABLE_REDUCE_EXPORTS=ON \
     -DENABLE_STATIC_LIBSTDCXX=ON \
     -DBUILD_BITCOIN_WALLET=OFF \
     -DBUILD_BITCOIN_QT=OFF \
     -DCMAKE_INSTALL_PREFIX=$pkgdir/usr
 
   ninja
   popd
 }
 
 check() {
   cd "$srcdir/${pkgname}-$pkgver/build"
 
   msg2 'Testing...'
   ninja check
 }
 
 package() {
   cd "$srcdir/${pkgname}-$pkgver"
 
   msg2 'Installing license...'
   install -Dm 644 COPYING -t "$pkgdir/usr/share/licenses/${pkgname}"
 
   msg2 'Installing examples...'
   install -Dm644 "contrib/debian/examples/bitcoin.conf" \
     -t "$pkgdir/usr/share/doc/bitcoin/examples"
 
   msg2 'Installing documentation...'
   install -dm 755 "$pkgdir/usr/share/doc/bitcoin"
   for _doc in \
     $(find doc -maxdepth 1 -type f -name "*.md" -printf '%f\n') \
     release-notes; do
       cp -dpr --no-preserve=ownership "doc/$_doc" \
         "$pkgdir/usr/share/doc/bitcoin/$_doc"
   done
 
   msg2 'Installing essential directories'
   install -dm 700 "$pkgdir/etc/bitcoin"
   install -dm 755 "$pkgdir/srv/bitcoin"
   install -dm 755 "$pkgdir/run/bitcoin"
 
   pushd build
   msg2 'Installing executables...'
   ninja install/strip
 
   msg2 'Installing man pages...'
   ninja install-manpages
   popd
 
   msg2 'Installing bitcoin.conf...'
   install -Dm 600 "$srcdir/bitcoin.conf" -t "$pkgdir/etc/bitcoin"
 
   msg2 'Installing bitcoin.service...'
   install -Dm 644 "$srcdir/bitcoin.service" -t "$pkgdir/usr/lib/systemd/system"
   install -Dm 644 "$srcdir/bitcoin-reindex.service" \
     -t "$pkgdir/usr/lib/systemd/system"
 
   msg2 'Installing bitcoin.logrotate...'
   install -Dm 644 "$srcdir/bitcoin.logrotate" "$pkgdir/etc/logrotate.d/bitcoin"
 
   msg2 'Installing bash completion...'
   for _compl in bitcoin-cli bitcoin-tx bitcoind; do
     install -Dm 644 "contrib/${_compl}.bash-completion" \
       "$pkgdir/usr/share/bash-completion/completions/$_compl"
   done
 }
diff --git a/doc/release-notes.md b/doc/release-notes.md
index f66f5a70a..972ee568a 100644
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -1,9 +1,7 @@
-# Bitcoin ABC 0.22.8 Release Notes
+# Bitcoin ABC 0.22.9 Release Notes
 
-Bitcoin ABC version 0.22.8 is now available from:
+Bitcoin ABC version 0.22.9 is now available from:
 
-  <https://download.bitcoinabc.org/0.22.8/>
+  <https://download.bitcoinabc.org/0.22.9/>
 
 This release includes the following features and fixes:
-
-- Code updated to conform to the C++17 standard.
diff --git a/doc/release-notes.md b/doc/release-notes/release-notes-0.22.8.md
similarity index 100%
copy from doc/release-notes.md
copy to doc/release-notes/release-notes-0.22.8.md