Update CHANGELOG.md with text for the default switching to Dart 2.0.
Change-Id: Ib47cc23ff1bcaefc708f1049a7964798a91b4157
Reviewed-on: https://dart-review.googlesource.com/61304
Reviewed-by: Dan Grove <dgrove@google.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 15b6043..a9f2ede 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -32,6 +32,14 @@
### Dart VM
+* The Dart VM now runs programs by default with Dart 2.0 semantics. The flag
+ `--preview-dart-2` is not available anymore.
+
+* A new flag `--no-preview-dart-2` has been added, this flag can be used
+ to revert to Dart 1.0 semantics. The flag is temporary and only meant to
+ help users in the migration process. The flag will go away in a future dev
+ release, when we no longer support Dart 1.0.
+
### Tool Changes
#### Pub
