Ahoy!
While we are not oficially released yet, the release update is already available.
There are more to come and this update is somewhat a milestone between Early Access and the Full Release.
Saved games are fully compatible with the release version, although some minor glitches may occur. Expect to find your vessel in the middle of the first map. =)
Achievements and Steam Cloud should be working now.
Good hunting.
ːjrogerː