At this point the core mechanics and rules remain unchanged. Additional content includes fleshing out more of the ship construction, more alien race examples and adding in cybernetics. One change I am wrestling with is whether to make armor a fixed protection amount or not. I am leaning towards fixed as it is "cleaner" to adjudicate mechanically (less die rolling). The big issue I am wrestling with is how creatures are defined. As simple as the rest of the system is, they are just too clunky in my opinion as originally written.
In any event, I am working towards an August timeline for release. Thanks for your patience and support!