Version 2.0.0-dev.56.0

Merge commit '2a7188523e6ff00c068136200e32e65f4200fdc9' into dev
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 440f2f4..e02675e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 2.0.0-dev.XX.0
+## 2.0.0-dev.57.0
 
 * Support Javascript Promise APIs as a Dart Future.  In Javascript a Promise has two
   callbacks one for success and one for failure.  For success the Future returns the
@@ -16,23 +16,6 @@
 
   The underlying JS Promise to Future mechanism will be exposed as a public API in a future checkin.
 
-(Add new changes here, and they will be copied to the
- change section for the next dev version)
-
-### Language
-
-#### Strong Mode
-
-### Core library changes
-
-### Dart VM
-
-### Tool Changes
-
-#### Pub
-
-#### Other Tools
-
 ## 2.0.0-dev.56.0
 
 ### Language
diff --git a/tools/VERSION b/tools/VERSION
index a3f39d7..717dac6 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -23,9 +23,9 @@
 #  * Making cherry-picks to stable channel
 #     - increase PATCH by 1
 #
-CHANNEL be
+CHANNEL dev
 MAJOR 2
 MINOR 0
 PATCH 0
-PRERELEASE 0
+PRERELEASE 57
 PRERELEASE_PATCH 0