I think the game has become notably more difficult lately. That’s good.
Now you can’t just jack up a skill by repeating an easy task forever and ever. For example, cooking meat only trains your cooking skill up to 1. From that one, you have to cook more difficult recipes to level up. Nice.
[spoiler]I also encountered a two new zombie types, one of them is very deadly, the other one is just nasty.
Some kind of gas zombie. It emits a lot of toxic gas, especially if you disturb or kill it.
The zombie bio-operator. Oh boy, this one is EVIL! I never defeated one so far, they totally destroyed me, even one character with Karate and unarmed combat on level 9. (Okay, he was tired and starving as well, so that makes sense.)
!!!FUN!!!
[/spoiler]
And third thing: Your weapons can get damaged by bashing/attacking over time. So you can’t use your two-by-four forever to bash zombie heads. 
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And also: Proper grammatical number support is in for items and monsters and more. This is a big step for translations, also for English. It is not perfect now. For mod makers and JSON writers:
Items and monsters have a new optional field “name_plural” where the English name has to be specified in plural form. The field “name” is for singular. If you do not specify the field “name_plural”, it is generated automatically by appending an “s”. So if your name is pluralized normally in English, you don’t have to specify “name_plural”.
English is extremely common. Don’t worry, other grammatical numbers found in other languages are respected as well, thanks to gettext. 
The modinfo.json accepts a new field “authors”. This is a string array for any number of authors. You still may use “author” and assign it a single string if there is only one author.
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Edit: Now I remember again what was the third new difficulty added to the game. Read above.