Well, shit is going down in EVE, not much for me to do there. Did some work on the game.
Basically, educated citizens spawn given correct circumstances. They can be recruited by Orders to get new heroes. The standard RTS method of a produce unit command still works, this is a separate thing. Click the Recruit button, click the citizen you want, based on their special stats, they turn into the unit type that is the main type for the Order. They gain a trait based on the extra classes the Order supports. Their main type has access to more class features and determines their unit model and base stats. Other classes are added as traits with maybe 70-80% of class features, and don't affect the unit model although they may give SLIGHT stat bonuses. Mainly they provide new skills/spells, and new production/crafting abilities. It may also be that certain combinations provide new bonus features based on which classes are enabled. At least you will be able to add new classes through research based on currently enabled classes.
The special recruit units, and their conversion to their new type and their assignment to their new home are enabled. Multi classing works but there is not yet a way to add new traits/classes to a structure, although you can assign multiple traits in the XML, with the first one in the xml list being the main type.