From memory:
Crime & Punishment: Bounties received now include part of your ship's rebuy cost & part of the victim's if it is a Commander
Crime & Punishment: Friendly fire is now just a fine & the threshold is increased
Crime & Punishment: Bounties never expire
Crime & Punishment: Bounties can be paid off at Interstellar Factors
Crime & Punishment: Committing crimes creates a hot ship - if you dock with a hot ship system services will be restricted in the jurisdiction you committed the crimes.
Crime & Punishment: If you commit too many crimes against a superpower's factions they will put a superpower bounty on you & dispatch Advanced Tactical Responders; each superpower has its own.
Crime & Punishment: If you die in a hot ship you get sent to a detention centre in its own private instance
Powerplay: Killing Powerships whether Commanders or NPCs does not create a crime but a Powerplay 'Paramilitary' bounty
Missions: you can choose the type of reward. Starting with wing missions & coming to all.
Missions: cargo delivery missions will no longer be blocked due to not enough cargo space-they can be done in multiple runs
Wing Missions (& missions?): can be terminated at partial completion for a partial reward
Wing Missions: can be done by commanders in solo but they will be noticeably harder than normal missions
BGS: a new mission reward choice of increased influence is being added
Personally I think all this is excellent; can't wait! 1 live stream down; 2 more to go!