We have new codelabs since the last stable release:

Your first Flutter app
Learn about Flutter as you build an application that
generates cool-sounding names, such as “newstay”,
“lightstream”, “mainbrake”, or “graypine”.
The user can ask for the next name, favorite the current one,
and review the list of favorited names on a separate page.
The final app is responsive to different screen sizes.
(Note that this codelab replaces the previous “Write
your first Flutter codelab for mobile, part 1 and part 2.”)

Using FFI in a Flutter plugin
Dart’s FFI (foreign function interface) allows Flutter apps
to use of existing native libraries that expose a C API.
Dart supports FFI on Android, iOS, Windows, macOS, and Linux.