[Official News] Dart: Breaking change 44072: Apps must declare an SDK constraint in pubspec.yaml

A new Dart blog post/announcement has been posted!

Get the full details here: https://groups.google.com/a/dartlang.org/d/msg/announce/TyaUVp4hXwU/NaeEddnAAAAJ

Corresponding tweet for this thread:

Share link for this tweet.