Nodes for hair in 3.3 like in this video?

Hello, in this video at 18’30 : Andy Goralczyk shows us some geometry nodes to add various effects in hair. I can’t find them in the release. Do I miss something ?

Well, I downloaded the file used in the video here and got the nodes but it would be more intuitive to have them directly in Blender I think instead of appending them.