Top story this week is the availability of the release candidate for version 1.9 which is available on the DEV Channel. This is closely followed by the opening of registration for the first Dart Developer Summit (April 28-29) - should be a great couple of days of Dart Sessions which will be streamed and recorded.
A new article appeared on the ACM website, with details of the new async and generator features. This gets quite involved but is a good read!
Jana Moudrá has an interesting post on two Dart packages for sortable lists & drag and drop.
Finally, Dart Pad gained a very important feature - code completion!