Remove zend-di <-> zend-servicemanager integration

composer.json

@@ -24,7 +24,6 @@
         "container-interop/container-interop": "^1.1"
     },
     "require-dev": {
-        "zendframework/zend-di": "^2.6",
         "zendframework/zend-filter": "^2.6.1",
         "zendframework/zend-form": "^2.7",
         "zendframework/zend-hydrator": "^1.1 || ^2.1",
@@ -54,6 +53,7 @@
         "zendframework/zend-mvc-plugin-prg": "To provide Post/Redirect/Get functionality within controllers",
         "zendframework/zend-psr7bridge": "(^0.2) To consume PSR-7 middleware within the MVC workflow",
         "zendframework/zend-serializer": "Zend\\Serializer component",
+        "zendframework/zend-servicemanager-di": "zend-servicemanager-di provides utilities for integrating zend-di and zend-servicemanager in your zend-mvc application",
         "zendframework/zend-validator": "Zend\\Validator component",
         "zendframework/zend-view": "Zend\\View component"
     },

doc/book/migration/to-v3-0.md

@@ -34,6 +34,28 @@ your application configuration. Components are pushed to the top of the module
 list, while modules are pushed to the end. As a development component, it will
 not be installed in your production distributions.
 
+## DI-ServiceManager integration
+
+The integration between [zend-servicemanager](https://zendframework.github.io/zend-servicemanager) and
+[zend-di](https://github.com/zendframework/zend-di) has been moved to a new
+standalone component, [zend-servicemanager-di](https://zendframework.github.io/zend-servicemanager-di/).
+In most cases, installing the component will restore the original behavior:
+
+```bash
+$ composer require zendframework/zend-servicemanager-di
+```
+
+> ### Manual installation
+>
+> The above assumes you're using the new component installer detailed in the
+> [dependency reduction](#dependency-reduction) section, above. If you are not,
+> you will need to inject the zend-servicemanager-di module into your
+> application manually; follow the [instructions in the zend-servicemanager-di documentation](https://zendframework.github.io/zend-servicemanager-di/)
+> to do so.
+
+The new component also contains a [migration document](https://zendframework.github.io/zend-servicemanager-di/migration/v2-to-v3/)
+detailing potential issues for users migrating to version 3.
+
 ## Routing
 
 Routing was removed from zend-mvc, and moved to a new component,