We have announced it for 3 weeks. Don't worry your files are safe. We have migrated them. You can download it if you want. Go to Develop tab and you will see the download link.
Announced by... An email? Or a post within Koding? At any rate, I'm glad to hear that they are backed up.
Yeah sorry about this, but we said to everyone that we are on a invite-only beta. Also all your files are backed up, just login and you will be able to download them :)