There's this very recent discussion: Shorthand For Inline Functions.
The decorators proposal also includes an accessor
modifier for fields which will automatically define getter and setter methods for the field, moving the value to a private backing field.
class Example {
accessor myBool = false;
}
This would include both the getter and setter, though. The grouped accessors proposal would provide syntax for specifying only one.
class Example {
accessor myBool { get; } = false;
}