Ostranauts v0.6.9.0 is now available on Steam: the "Mo' K-Leg, Mo' Problems" Update, and it's another fairly big one.
It includes a new OKLG station, several new ships, more NPCs (including some flying ships), social system rebalance and UI improvements. Plus, police can board you now, so watch what you're doing :)
For best results, you are encouraged to start a new character.
Old saves might still work, but there's a decent chance they'll cause bugs. And will definitely miss new content.