Star Wars Episode IX: The Rise Of Skywalker teaser

So, just a little while ago, we got the first teaser trailer for the last of the new Star Wars trilogy, Episode IX: The Rise Of Skywalker. Wow, it feels so good to finally have a title. And this teaser shows so much, but also, so little at the same time. First off, it obviously shows us some random stuff that we clearly won't know about until it comes out at the start with Rey outrunning a ship and then a bunch of action really fast. And we even see Leia, strangely. I'm curious to know how, but we also get to see Lando back too. But then the biggest surprise is at the end because we somehow hear Darth Sidious's laughing. So, this could indicate that he's somehow still alive. So, I'm curious to see how they answer these questions. Anyway, here it is and I hope you all like this.