The Flex Doc Team has made an excellent job. Flex documentation is awesome as well as the AIR documentation.
These days I'm spending a lot of time writing some chapters for a book on AIR (I'll give more details next week about this topic). So I'm reading the Flex 3 / AIR 1 documentation very well.
Am I wrong or the Flex 3 Livedocs are not updated to AIR Beta 3 ?
We have to admit that most of the changes take place up front and are very easy to update, but I think that for beginenrs and new developers is essential to have the right and updated documentation.
I'm sure that when the final version will be released everything will be fixed.