We already had 2 instances of getting notified via Pulse of new builds, and our update test failed because Firefox doesn't see any updates available. 1st time was on yesterday's Nightly build. All tests failed. I retriggered all of them 12 hours later and they all passed. Right now new Aurora builds are available on FTP, yet Aurora states that "Aurora is up to date" Are the update channels disabled or delayed?
This is expected due to the big landing of bug 748698 yesterday. They'll be back shortly. Apologies for the lack of communication around this.
Updates are pointed at the latest available ones again.