Lumia Cyan is rolling out to those on AT&T with the Lumia 1020 or Lumia 1520 running Windows Phone 8.1 Preview for Developers. Previously users would need to roll back to a retail version of Windows Phone in order to receive the Lumia Cyan update. That's no longer the case.
Reports are flying in that those on AT&T with a Lumia 1020 or Lumia 1520 are receiving updates for Lumia Cyan. Those users are currently running Windows Phone 8.1 Preview for Developers. Those with the Lumia 920 on T-Mobile Germany also running Windows Phone 8.1 Preview for Developers should be able to grab Lumia Cyan without downgrading.
Microsoft's Greg Sullivan ( @gregwardo) took to Twitter to confirm the reports:
"Cyan update rolling to #WindowsPhone developer preview Lumia 1020 and 1520 on ATT, T-Mo Germany Lumia 920. More soon..."
Let us know if you see an update! We'll keep you posted as to when other devices are able to upgrade directly without rolling back.
Thanks for the tips everyone!