LOADS of items, seriously, so many items. it’s nuts.
Major vehicle recombobulation, which fixed up several longstanding vehicle issues, and makes them IMO look better (more like little boxes now)
You should be able to barricade buildings a bit and actually keep out small numbers of zombies now, but large numbers of zombies can pile on and smash through the doors.
Furniture is draggable using the same command as draggable vehicles.
Save compatability with 0.8
Lots of new natural animals, including vermin (tiny stuff like mice and insects scurrying around).
Basements multiplied (half of all houses now have basements), now with a chance of zombies (1/5 I think)
That’s off the top of my head, there are literally thousands of changes. I’ll be catching up the changelog soon I think.