The Latest prerelease is now out: http://www.arcengames.com/share/AIWar1013L.zip
That version is an upgrade from version 1.012, so you have to already have 1.012 (or greater) installed. Just unzip it into your game folder (usually C:\Program Files\Arcen Games\AI War\ unless you specified something else). Please make sure that your unzip process keeps the folder structure from the zip file, rather than just unpacking all of the files into the base target directory.
What's new since 1.013K:
(Cumulative release notes since 1.012 are attached at the bottom)
-The AI thread will no longer recieve "turn starting" messages when the game is paused, which will prevent it from issuing a bunch of orders while the game is paused and nothing is going on.
-There is now zero chance that shots will hit ships that have just moved to another planet.
-A prior bug was still preventing shots from disappearing if their targets went out of range. Fixed.
-A bug could cause excess shots to be fired and performance to go severely downward when MLRS ships were brought near counter-missile sources and fired on nearby ships. Fixed.
-All mobile-military teleporting ships (so, tele-raiders and tele-battle stations) are now briefly paralyzed (unable to move, shoot, etc) when they come out of a teleportation. The severity of the paralysis is based on the distance they moved. This helps make them not quite so all-powerful as they have been in recent releases, although the specific values of this balance may be tweaked more in the future.
CHANGES FROM PAST PRERELEASES
-The health after shots "fix" in the last prerelease actually broke it worse. Whoops.
Fixed for real, now.
UPDATED SOUND EFFECTS - Pablo Vega