Per this thread (Urgent Sean Murray is on this livestream)
… Multiplayer, both co-operative and PvP. Whilst I was/am against multiplayer in this game, this just means I’ll be staying at the outer bands of the universes I visit. I’ll do “my thing” and everyone else can do their things elsewhere. With PvP entering the game, I really think this will de-evolve into another gank-fest/EVE-look-alike. To each their own.