As part of this migration work, we have introduced an exciting new Dashboard component from Flexicious. I expect we will have a bigger use for this component in the future, but for now it is being used for the Performance Monitor which is viewable in debug mode at Flex > Performance Monitor.
As of this writing we have everything migrated in terms of createable, update-able, & deletable stuff. This includes all system settings, workflow, etc. There are some other Struts things remaining such as report generation, the status page, etc but for all intents & purposes the admin console is no longer needed. We view this as a major step forward for the system since a big part of moving forward is getting rid of the old.