Changelog since the first version on steam:
major and minor bugfixes
improved performance during battles with lots of units firing
ambient sounds
new engine sounds
QOL
improved pathfinding - helicopters tend to avoid large hills, ships tend to avoid shores and land units tend to avoid hills based on terrain difference and order distance. If given order to go to hill, they will not avoid that hill. The land units are still bad at avoiding water. And pathfinding generally does not work when pressing shift+order to similar places as game assumes that the player wants the units to go to that place.
other unlisted small changes