Currently, the SDK contains a sample demonstrating: (1) Intergrating with a database, basic CRUD, and rails migrations. (2) Uploading and downloading files. (3) Downloading data directly from Flex and sending data to a new browser window directly from Flex. (4) a simple Directory Explorer. The last sample uses WebORB for integrating Flex with Rails.
Great news. Flash is on the fast track out its ghetto image and its exciting to see Adobe care about integration with the world around it.