This time, the ghost ship issue really is fixed. Before this update, when a ship sank outside of the player's vision, the sprite would not be removed. These phantom ships would then stay around forever. Not a good thing! I expect to never see them ever again :).
Other than that, this update introduces the concept of Cargo, which ships leave behind when killed. This can be anything from free resources to a flag! You can collect them by moving a unit over them.
I also changed the background from a just solid grey to a starry background with parallax scrolling, which turned out pretty neat. This is what it looks like:

Patch 1.0.9 Notes
Gameplay / graphical changes
- Units now leave resources behind when killed
- Improved some sprites
Bug fixes
- 'Ghost ships' should now no longer appear