hMMM, where to start. This is all for 40.xx, which is the only release since the minecart one. A bunch of long-running bugs that made life difficult were fixed. E.G., you can actually use bins semi-properly now, apparently. More cool stuff happens on world gen. Adventure Mode got some neat stuff[Running, jumping and climbing] added and a bunch of more interesting[Although mostly more obtuse] conversation options. You can claim things, lead uprisings and surrender to people, although none of these work as intended right now. Sieges and such are now processed realistically[Which, due to a pathfinding error, means you don't get that many of them. Confirmed fixed for next release]. You can "retire" fortresses instead of reclaiming them, which leaves them active as NPC fortresses in the same world and you can reclaim NPC fortresses that have been destroyed, although this is usually very very dangerous. There are multitile trees which yield oodles and oodles of wood when lumberjacked. The main big thing is that the world keeps doing stuff when you're in Fortress Mode, although its kind of abstract and buggy right now. This does reduce FPS by a fair bit, but that should be fixed next release. Blunt weapons can destroy body parts by "pulping" if you hit hard enough and you can cut off people's heads by going for the neck, which is a seperate bodypart from the head, which is no longer severable. There are probably more, because its a huge release, but I think that's the basics. Next release, which will be Soon[TM] will have multicultural fortresses, performance stuff, fortress visitors, usable mugs and fixes to a lot of the above problems and more besides.