This version adds physical impact to explosions. Your ship is not only damaged by nearby explosions, but impacted by the physical shockwave as well. This is a new feature, and the settings may require some tweaking. We've also added some debugging features to track down the "invisibility" bug. Some bugs in the collision/damage code have also been fixed, energy weapon damage should now properly be applied regionally.
The network code improvements did not make it into this release.