This update was actually released a bit early by accident due to the plugin being uploaded to the wrong folder, but alas. It adds new weapons called plasma cannons, which you can see more about on this page.
It also makes it so that the minimum cooldown for left-click weapons is only one tenth of a second, so ships with fewer weapons can fire extremely rapidly and ships with many weapons aren't too advantageous. Right-click weapons now have a cooldown of 10 seconds but were buffed - proton torpedoes have a huge explosion power (although you can now have far fewer of them) and heavy lasers have twice as many explosions.
There is also a neat little feature that lets you rotate your ship with hotkeys while holding a ship controller, without using a helm sign. To turn right, you can drop the ship controller (it will cancel it) (default key is q). To turn left, you can switch it to your offhand (of course, it'll cancel that too) (default key is f). You can even do this during ship combat while sneak flying! It is very good for maneuvers, and it lets you save space in your ship by removing a helm sign once you're comfortable with ship controllers.