As of now it's only available to those who backed the Kickstarter. I've been going through it slowly but so far I think it's really solid. I like Yann's style/delivery. Starting out with a decent amount of GDScript, which I like. Eventually they will be showing how to convert to C# (although I'm likely to stick with native). All in all, so far, a very solid course that jumps right in!
Anyone else going through it? Thoughts?