Anyone knows what is the difference between these versions?

Version it has been updated to 2.0.3.0395 which has almost doubled its size (yikes!) I think due to the new engine used in deponia 1and2.
I can't find anything else on the net, but this: https://appdb.winehq.org/objectManager.php?sClass=application&iId=12205

Anyway, someone knows if there are any plans to implement the latest deponia3 engine for this game too?
4GB is way too much.