It did update, though. It was 0.5, now it's 0.5 (FIX), so there were probably some bugfixes
Viewing post in War of the Worlds (Legacy Version) comments
The fix version was there already before. And I just tried to launch it after redownloading and it has still the no sound bug after launching, so it doesn't seem much fixed or updated to me.
Shame. If the developer would at least bother to fix the bugs, the game would be great as it is (with re-enabled survival and darkness/lighting features of old versions).