diff --git a/php/ng/apache2/ini.sls b/php/ng/apache2/ini.sls
index 8f01a8a6..6e9bc398 100644
--- a/php/ng/apache2/ini.sls
+++ b/php/ng/apache2/ini.sls
@@ -5,5 +5,8 @@
 {% set settings = php.ini.defaults %}
 {% do settings.update(php.apache2.ini.settings) %}
 
+include:
+  - php.ng.deprecated
+
 php_apache2_ini:
   {{ php_ini(php.lookup.apache2.ini, php.apache2.ini.opts, settings) }}
diff --git a/php/ng/apache2/init.sls b/php/ng/apache2/init.sls
index ce587886..f7b94196 100644
--- a/php/ng/apache2/init.sls
+++ b/php/ng/apache2/init.sls
@@ -1,5 +1,6 @@
 {% if grains['os_family'] in ["Debian", "FreeBSD"] %}
 include:
+  - php.ng.deprecated
   - php.ng.apache2.install
 {% endif %} #END: os = Debian|FreeBSD
 {% if grains['os_family'] == "Debian" %}
diff --git a/php/ng/apache2/install.sls b/php/ng/apache2/install.sls
index 46c7da4f..51e1500a 100644
--- a/php/ng/apache2/install.sls
+++ b/php/ng/apache2/install.sls
@@ -1,5 +1,8 @@
 {% from "php/ng/map.jinja" import php with context %}
 
+include:
+  - php.ng.deprecated
+
 {% set state = 'apache2' %}
 {% include "php/ng/installed.jinja" %}
 
diff --git a/php/ng/cli/ini.sls b/php/ng/cli/ini.sls
index 68441922..1d5c92d4 100644
--- a/php/ng/cli/ini.sls
+++ b/php/ng/cli/ini.sls
@@ -2,6 +2,9 @@
 {% from "php/ng/map.jinja" import php with context %}
 {% from "php/ng/ini.jinja" import php_ini %}
 
+include:
+  - php.ng.deprecated
+
 {% set settings = php.ini.defaults %}
 {% for key, value in php.cli.ini.settings.items() %}
   {% if settings[key] is defined %}
diff --git a/php/ng/cli/init.sls b/php/ng/cli/init.sls
index 06bc3e91..78cb5a3d 100644
--- a/php/ng/cli/init.sls
+++ b/php/ng/cli/init.sls
@@ -1,6 +1,7 @@
 # Installs php-cli and manages the associated php.ini
 
 include:
+  - php.ng.deprecated
   - php.ng.cli.install
   - php.ng.cli.ini
 
diff --git a/php/ng/cli/install.sls b/php/ng/cli/install.sls
index ee4d463e..432e5452 100644
--- a/php/ng/cli/install.sls
+++ b/php/ng/cli/install.sls
@@ -1,6 +1,9 @@
 {% set state = 'cli' %}
 {% include "php/ng/installed.jinja" %}
 
+include:
+  - php.ng.deprecated
+
 {%- if salt['grains.get']('os_family') == "Debian" %}
 {% set current_php = salt['alternatives.show_current']('php') %}
 {% set phpng_version = salt['pillar.get']('php:ng:version', '7.0')|string %}
diff --git a/php/ng/composer.sls b/php/ng/composer.sls
index 8f6221da..b5776e66 100644
--- a/php/ng/composer.sls
+++ b/php/ng/composer.sls
@@ -11,6 +11,7 @@
 {% set salt_user_home = salt['user.info'](salt_user).get('home', '/root') %}
 
 include:
+  - php.ng.deprecated
   - php.ng
 {% if grains['os_family'] == 'FreeBSD' %}
   - php.ng.filter
diff --git a/php/ng/deprecated.sls b/php/ng/deprecated.sls
new file mode 100644
index 00000000..83f9fa51
--- /dev/null
+++ b/php/ng/deprecated.sls
@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+# vim: ft=sls
+
+{#- Evaluating as `False` by default, using this method since `defaults.yaml` not available in this repo #}
+{%- if not salt['config.get']('php').get('warning_messages', {}).get('v1.0.0', {}).get('mute_upcoming', False) %}
+php-deprecated-in-v1.0.0-test-succeed:
+  test.succeed_without_changes:
+    - name: |
+
+
+        ################################################################################
+        #                                                                              #
+        #            WARNING: BREAKING CHANGES IN UPCOMING VERSION `v1.0.0`            #
+        #                                                                              #
+        ################################################################################
+        #                                                                              #
+        # This formula currently provides two methods for managing PHP; the old method #
+        # under `php` and the new method under `php.ng`. In upcoming `v1.0.0`, the old #
+        # method will be removed and `php.ng` will be promoted to `php` in its place.  #
+        #                                                                              #
+        # If you are not in a position to migrate, you will need to pin your repo to   #
+        # the final release tag before `v1.0.0`, which is expected to be `v0.37.1`.    #
+        #                                                                              #
+        # If you are currently using `php.ng`, there is nothing to do until `v1.0.0`   #
+        # is released.                                                                 #
+        #                                                                              #
+        # To migrate from the old `php`, the first step is to convert to `php.ng`,     #
+        # before `v1.0.0` is released.                                                 #
+        #                                                                              #
+        # To prevent this message being displayed again, set the pillar/config value:  #
+        #                                                                              #
+        # ```                                                                          #
+        # php:                                                                         #
+        #   warning_messages:                                                          #
+        #     v1.0.0:                                                                  #
+        #       mute_upcoming: True                                                    #
+        # ```                                                                          #
+        #                                                                              #
+        ################################################################################
+{%- endif %}
diff --git a/php/ng/fpm/config.sls b/php/ng/fpm/config.sls
index a91ff892..0c4d6d64 100644
--- a/php/ng/fpm/config.sls
+++ b/php/ng/fpm/config.sls
@@ -2,6 +2,9 @@
 {% from 'php/ng/map.jinja' import php with context %}
 {% from "php/ng/ini.jinja" import php_ini %}
 
+include:
+  - php.ng.deprecated
+
 {% set ini_settings = php.ini.defaults %}
 {% for key, value in php.fpm.config.ini.settings.items() %}
   {% if ini_settings[key] is defined %}
diff --git a/php/ng/fpm/init.sls b/php/ng/fpm/init.sls
index 0087bc37..80b446a8 100644
--- a/php/ng/fpm/init.sls
+++ b/php/ng/fpm/init.sls
@@ -1,6 +1,7 @@
 # Meta-state to fully install php.fpm
 
 include:
+  - php.ng.deprecated
   - php.ng.fpm.config
   - php.ng.fpm.service
   - php.ng.fpm.pools
diff --git a/php/ng/fpm/install.sls b/php/ng/fpm/install.sls
index 6fda19ea..72fa5c84 100644
--- a/php/ng/fpm/install.sls
+++ b/php/ng/fpm/install.sls
@@ -1,2 +1,5 @@
+include:
+  - php.ng.deprecated
+
 {% set state = 'fpm' %}
 {% include "php/ng/installed.jinja" %}
diff --git a/php/ng/fpm/pools.sls b/php/ng/fpm/pools.sls
index cfc796b4..b3d7454f 100644
--- a/php/ng/fpm/pools.sls
+++ b/php/ng/fpm/pools.sls
@@ -10,6 +10,7 @@
 {% endmacro %}
 
 include:
+  - php.ng.deprecated
   - php.ng.fpm.service
   - php.ng.fpm.pools_config
 
diff --git a/php/ng/fpm/pools_config.sls b/php/ng/fpm/pools_config.sls
index 625f303d..e63ec2ab 100644
--- a/php/ng/fpm/pools_config.sls
+++ b/php/ng/fpm/pools_config.sls
@@ -2,6 +2,9 @@
 {% from 'php/ng/map.jinja' import php with context %}
 {% from "php/ng/macro.jinja" import sls_block, serialize %}
 
+include:
+  - php.ng.deprecated
+
 # Simple path concatenation.
 {% macro path_join(file, root) -%}
   {{ root ~ '/' ~ file }}
diff --git a/php/ng/fpm/service.sls b/php/ng/fpm/service.sls
index aa8cd2c5..084a5395 100644
--- a/php/ng/fpm/service.sls
+++ b/php/ng/fpm/service.sls
@@ -5,6 +5,7 @@
 {% set service_function = {True:'running', False:'dead'}.get(php.fpm.service.enabled) %}
 
 include:
+  - php.ng.deprecated
   - php.ng.fpm.install
 
 php_fpm_service:
diff --git a/php/ng/hhvm/config.sls b/php/ng/hhvm/config.sls
index f257a6fc..4f242e55 100644
--- a/php/ng/hhvm/config.sls
+++ b/php/ng/hhvm/config.sls
@@ -2,6 +2,9 @@
 {% from "php/ng/map.jinja" import php with context %}
 {% from "php/ng/ini.jinja" import php_ini %}
 
+include:
+  - php.ng.deprecated
+
 {% set server_settings = php.lookup.hhvm.server %}
 {% do server_settings.update(php.hhvm.config.server.settings) %}
 
diff --git a/php/ng/hhvm/init.sls b/php/ng/hhvm/init.sls
index 080edb62..ba6576e3 100644
--- a/php/ng/hhvm/init.sls
+++ b/php/ng/hhvm/init.sls
@@ -1,6 +1,7 @@
 # Meta-state to fully install php.hhvm
 
 include:
+  - php.ng.deprecated
   - php.ng.hhvm.repo
   - php.ng.hhvm.config
   - php.ng.hhvm.service
diff --git a/php/ng/hhvm/install.sls b/php/ng/hhvm/install.sls
index 1c1b2778..65761eee 100644
--- a/php/ng/hhvm/install.sls
+++ b/php/ng/hhvm/install.sls
@@ -1,2 +1,5 @@
+include:
+  - php.ng.deprecated
+
 {% set state = 'hhvm' %}
 {% include "php/ng/installed.jinja" %}
diff --git a/php/ng/hhvm/repo.sls b/php/ng/hhvm/repo.sls
index fa790a09..8fd38416 100644
--- a/php/ng/hhvm/repo.sls
+++ b/php/ng/hhvm/repo.sls
@@ -2,6 +2,7 @@
 {% from "php/ng/map.jinja" import php with context %}
 
 include:
+  - php.ng.deprecated
   - php.ng.hhvm.install
 
 
diff --git a/php/ng/hhvm/service.sls b/php/ng/hhvm/service.sls
index d7bcce9b..458ad7c4 100644
--- a/php/ng/hhvm/service.sls
+++ b/php/ng/hhvm/service.sls
@@ -5,6 +5,7 @@
 {% set service_function = {True:'running', False:'dead'}.get(php.hhvm.service.enabled) %}
 
 include:
+  - php.ng.deprecated
   - php.ng.hhvm.install
 
 php_hhvm_service:
@@ -15,5 +16,5 @@ php_hhvm_service:
   - require:
     - sls: php.ng.hhvm.install
   - watch:
-    - pkg: php_install_hhvm 
+    - pkg: php_install_hhvm
 
diff --git a/php/ng/installed.jinja b/php/ng/installed.jinja
index 0033d31c..9db803df 100644
--- a/php/ng/installed.jinja
+++ b/php/ng/installed.jinja
@@ -4,6 +4,8 @@
 {% from "php/ng/map.jinja" import php with context %}
 {% from "php/ng/macro.jinja" import sls_block %}
 
+include:
+  - php.ng.deprecated
 
 {% set pkginfo = php.lookup.pkgs.get(state) %}
 
@@ -60,7 +62,7 @@ php_ppa_{{ state }}:
     - __env__:
       - LC_ALL: C.UTF-8
     - onlyif:
-      - test ! -e /etc/apt/sources.list.d/ondrej-php.list 
+      - test ! -e /etc/apt/sources.list.d/ondrej-php.list
     - require_in:
       - pkg: php_install_{{ state }}
   pkg.latest:
diff --git a/php/ng/mdb2/init.sls b/php/ng/mdb2/init.sls
index d39a7803..138ace04 100644
--- a/php/ng/mdb2/init.sls
+++ b/php/ng/mdb2/init.sls
@@ -1,2 +1,5 @@
+include:
+  - php.ng.deprecated
+
 {% set state = 'mdb2' %}
 {% include "php/ng/installed.jinja" %}
diff --git a/php/ng/mdb2/mysql.sls b/php/ng/mdb2/mysql.sls
index 83939e25..831515d7 100644
--- a/php/ng/mdb2/mysql.sls
+++ b/php/ng/mdb2/mysql.sls
@@ -1,3 +1,6 @@
+include:
+  - php.ng.deprecated
+
 {% set state = 'mdb2-driver-mysql' %}
 {% include "php/ng/installed.jinja" %}
 {% include "php/ng/mdb2/init.sls" %}
diff --git a/php/ng/mdb2/pgsql.sls b/php/ng/mdb2/pgsql.sls
index fed322ac..9b9aba4a 100644
--- a/php/ng/mdb2/pgsql.sls
+++ b/php/ng/mdb2/pgsql.sls
@@ -1,3 +1,6 @@
+include:
+  - php.ng.deprecated
+
 {% set state = 'mdb2-driver-pgsql' %}
 {% include "php/ng/installed.jinja" %}
 {% include "php/ng/mdb2/init.sls" %}
diff --git a/php/ng/suhosin.sls b/php/ng/suhosin.sls
index 903a3359..b4b9c2a3 100644
--- a/php/ng/suhosin.sls
+++ b/php/ng/suhosin.sls
@@ -1,6 +1,7 @@
 {% from "php/ng/map.jinja" import php with context %}
 
 include:
+  - php.ng.deprecated
   - php.ng
   - php.ng.dev
 
diff --git a/php/ng/xcache/ini.sls b/php/ng/xcache/ini.sls
index c4977888..46b65519 100644
--- a/php/ng/xcache/ini.sls
+++ b/php/ng/xcache/ini.sls
@@ -2,6 +2,9 @@
 {% from "php/ng/map.jinja" import php with context %}
 {% from "php/ng/ini.jinja" import php_ini %}
 
+include:
+  - php.ng.deprecated
+
 {% set settings = php.xcache.ini.defaults %}
 {% for key, value in php.xcache.ini.settings.items() %}
   {% if settings[key] is defined %}
diff --git a/php/ng/xcache/init.sls b/php/ng/xcache/init.sls
index fb6e07fb..2214246c 100644
--- a/php/ng/xcache/init.sls
+++ b/php/ng/xcache/init.sls
@@ -1,6 +1,7 @@
 # Installs php-xcache and manages the associated xcache.ini
 
 include:
+  - php.ng.deprecated
   - php.ng.xcache.install
   - php.ng.xcache.ini
 
diff --git a/php/ng/xcache/install.sls b/php/ng/xcache/install.sls
index 82a7eb42..78caa756 100644
--- a/php/ng/xcache/install.sls
+++ b/php/ng/xcache/install.sls
@@ -1,2 +1,5 @@
+include:
+  - php.ng.deprecated
+
 {% set state = 'xcache' %}
 {% include "php/ng/installed.jinja" %}
diff --git a/pillar.example b/pillar.example
index 5aa54d9c..83859334 100644
--- a/pillar.example
+++ b/pillar.example
@@ -5,6 +5,7 @@ php:
   warning_messages:                                                          #
     v1.0.0:                                                                  #
       mute_critical: True                                                    #
+      mute_upcoming: True                                                    #
   # Use external repository instead the default (only Ubuntu family)
   use_external_repo: True
   # Set the external repository name (valid only if use_external_repo is not none)