diff --git a/UPGRADE-2.7.md b/UPGRADE-2.7.md
index 3a9884d97d..519332155c 100644
--- a/UPGRADE-2.7.md
+++ b/UPGRADE-2.7.md
@@ -1,6 +1,30 @@
 UPGRADE FROM 2.6 to 2.7
 =======================
 
+Global
+------
+
+ * `E_USER_DEPRECATED` warnings -
+   `trigger_error('... is deprecated ...', E_USER_DEPRECATED)` -
+   are now triggered when using all deprecated functionality.
+   To avoid filling up error logs, you may need to add
+   `~E_USER_DEPRECATED` to your `error_reporting` setting in
+   `php.ini` to *not* add these errors to your log.
+
+   In the Symfony Framework, `~E_USER_DEPRECATED` is added to
+   `bootstrap.php.cache` automatically, but you need at least
+   version `2.3.14` or `3.0.21` of the
+   [SensioDistributionBundle](https://github.com/sensiolabs/SensioDistributionBundle).
+   So, you may need to upgrade:
+
+   ```bash
+   composer update sensio/distribution-bundle
+   ```
+
+   The [phpunit-bridge](https://github.com/symfony/phpunit-bridge)
+   was introduced to silence deprecation warnings while running your
+   tests and give you a report of deprecated function calls.
+
 Router
 ------