Leopard DNS

Does anybody know if they fixed the following Tiger DNS issues in Leopard? 1. Changes to DNS being transfered to secondary servers 2. Reverse lookup records being transfered to secondary servers 3. Ability to alias the root domain - i.e when you set up example.com, can you create an alias to example.com that points to your web server so that both example.com and www.example.com go to the web server? In Tiger you had to add this in the CLI, which of course meant you could not use the GUI for anything.