Right now anonymous users have read access to all the artifacts on this server. This policy is about to be changed. The old repositories, that were accessible will remain accessible for anonymous users in future and also some other repositories will be added.
However some of the new repositories will not be accessible for general public (they will contain immature testing stuff). Why am I writing about a change, that most of the people will not even notice?
The thing is I might have missed something. If you want to know if your project will be OK, you can try to build it using "jboss-anonymous" account (password "anonymous") instead of the anonymous access. If it fails due to missing rights, please, report the issue here.