If you run any of our sceneries installer, they'll always get the current version of the Addon Manager, because the installer gets the .dll and related files directly from the internet so, it's not possible to risk getting an old version, unless you install on a computer that doesn't have any internet connection.
In that case, you'll get the Addon Manager version that was the most current when the scenery installer was made. Which, in case of KDFW, are the same.
The full installer currently online it's 1.0.2, but it will be updated very soon, probably tomorrow.