I image that it will deal with stuff in the object store for the app, but how will users be able to set things? Will be it just be a string to be changed by the user, or will it allow things like a pull down list per key so the user can select the possible values? Maybe a check box for simple "on/off" settings? The ability to say that a number must be entered and not alphabetic characters?
No rush, but it might be useful info as people start planning for this feature.