The testing for ZDi has been going well. So far, there aren't any major complaints or problem areas save one. This is something I hope to fix before release, but the problem definitely doesn't keep the game from being playable. I have thus-far already implemented a fair amount of enhancements and other minor bug fixes.
It's taken a while to finally get things into gear and clear up any issues regarding paperwork-related items. I'm almost at the finish line!