A major goal for the first public demo is to get missions and some narrative in -- effectively make it more representative of the actual gameplay as opposed to simply the sandbox free roam thing we have going on in the test releases now. A major goal of the second public demo will be cinematic mode (3D H scenes). I wouldn't expect the game to go into early access before these things are present, along with some other goals like combat improvements and move set expansion, skill system and quick menu integration, etc.