From his Twitter comments, it sounds like Saurik was able to re-architect his repo about 40 minutes ago to help with loading. Unfortunately, it required a DNS change so anyone whose DNS servers cache requests for a long time will be stuck with the old config for awhile. That's probably why we're recently seeing reports of some people able to get through no problem, and others still being dead.
He also mentioned it doesn't apply to the payment backend, so those of you trying to log in and restore purchases are still in for a wait.