Hello MagistrateMondra! It depends what exact information you're looking for but it's unlikely we'll have all the details on the contract system, how laws will be drafted, etc. prior to Domain/Settlement Selection unfortunately that stuff is likely to be more hammered out in Pre-Alpha, Alpha, and Beta which are in general not slated to happen prior to selection.
My suggestion for you if you're concerned with who your superior will be as Count, Duke, etc. and you're not seeing the information you like come closer to Selection time look for NPC overlords. Your King at least will be a player but a Count and Duke liege lord for some "cushion" is likely not impossible at selection time.
Of course also bear in mind NPCs can be poor rulers too, they'll come with a variety of personalities and likely some enterprising player will aim to be Count of your County eventually (maybe you? :D) but maybe that will give you more time to get set up.