This one is primarily for a single bugfix: to prevent the exo-galactic waves from getting all distracted with minutiae and wandering off after minor ships. While funny to see your ultimate enemy do this, it wasn't exactly conductive to their usual hardcore challenge.
There's also a couple of other handy fixes and tweaks in here. Enjoy!
This is a standard update that you can download through the
in-game updater itself, if you already have 4.000 or later. When you
launch the game, you'll see the notice of the update having been found
if you're connected to the Internet at the time. If you don't have 4.000 or later, you can download that here.