The Core and Project Teams work from a private code repository during development.  Once a Release is determined the code that makes up that release is packaged and released to the public.  This means that sometimes there is code that is "still being worked on" or that is "in development" but not part of the code that makes up that particular release so it is not released as it is still subject to many changes and may cause compatibility issues with future releases.

In this case, I think Michael is saying that a version of his DAL2 proposal is included in some code in the private repository and since he now has access to that he can see that some work is being done on it, but as he said, it is not ready for release yet as other items have a priority currently.