What's new since a while?

Hey guys! So I haven't played League in almost 2 years I think, which is a very long time. However, I got some time now to get back to the game ,but I was wondering what has changed since then? The last thing I can remember is that you could save keys and chests to get new skins etc. What are things to look out for? Which champions are new, good to pick up again or which items have changed? Even iif you could tell me one thing that has changed or that is good to know, please tell me! Thanks PS.: IDK which board to put this on, I am not a new player so I didn't put it there
Report as:
Offensive Spam Harassment Incorrect Board