Over the last few hours Apple has been hard at work preparing their dev center for the new developer release of iOS 7. In the last few minutes errors have stopped and there is now full access to all of the beta files that Apple promised. Remember that we advise you do no download iOS 7 for your main device as there can be many bugs that hinder the experience. Apple is also known for stopping people from downgrading.
Here are the links (Must be logged into the developer center for them to work)