Sky Nations was updated to version 0.131. This update introduces the Nations system, a new launcher and some others things.
About the Nations system:
A very early start to Nations also came a long in this update. Players can now have a more official way to group together and have a hierarchy of leadership through the Nation system. Your allegiance is shown through your Name tag that appears above you when players are close making it easy to identify different teams. This is the very start of Nations and only includes functionality to group together.
You can also purchase Sky Nations for 50% ($2.50) on Indie Game until October 1st: https://indiegamestand.com/store/314/sky-nations/
To finish, the new trailer of Sky Nations: