Ahoy!
Although we are not officially in release yet, the release update is already available!
More to come but this update is somewhat a milestone between Early Access and the Full Release. This is finally happening!
Your saves should be compatible with the release version of the game, however a few minor glitches might occur. Expect to find your vessel back at the very first map. =)
Achievements and Steam Cloud should be working now.
Good hunting.
:piratescull: