Well, not as much as in extra content and stuff but there is actually a big change that would change your gameplay.
added: smoking requires continuous maintaining of fire
In the previous versions smoking succeeded if the room was heated once, and the process required no further maintenance. Now the heating must be maintained through the whole process.
There is also a dedicated sauna stove (different than normal fireplace), other than that there
isn't too much difference but there are little things that are nice to have like milking reindeers and njerpez(the bad guys) travelling in groups and stuff like that. But I would still prefer to be on the latest versions, because of the maintained mods usually working towards the steam version rather than free (although the steam versions eventually become free).
Here is the full patch note of 3.63
https://www.unrealworld.fi/forums/index.php?topic=5628.0