Reign of Giants has officially been released. It adds new biomes, new objects, new inventions, new characters and new mechanics.
I really like some of the changes. For instance, there is an effect now with rain. When it rains you will slowly get wet. If your wetness reaches a certain level you will freeze easily even if it's not winter. You can also get all your items wet that you're carrying. I found it makes a Spear for instance, a Slippery Spear. Which turns out in combat your character has a change to drop it, which you obviously don't want to happen. You can counter rain with an umbrella, rain coat or rain hat it seems.
There are also Giants, but I'm not sure what they do yet. They don't always seem hostile. There are new creatures and a bunch of new things to invent. I am really enjoying it so far. I'm actually doing a Let's Play of it right now. Diving in blind, I had no idea what rain would do. It's fun to see the consequences.
How are you liking the changes so far?